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The main suspect in the 1994 disappearance of model turned prostitute Revelle Balmain has been charged with assaulting and stalking another Sydney woman. 

Gavin Owen Samer, who has always denied any role in Ms Balmain's disappearance, spent several nights in custody after being charged with the fresh alleged offences.

The 51-year-old is accused of assault occasioning actual bodily harm, stalking or intimidating and possessing a prescribed restricted substance.

He was arrested after allegedly assaulting the woman at Bondi, in Sydney's eastern suburbs, on April 12 and spent four nights behind bars before being granted bail.

The woman is known to Samer, who denies any wrongdoing, and the charges are listed as being domestic violence related. 

Upon his arrest Samer was allegedly found with 19 tablets of Trazepam, one of the benzodiazepine family of tranquilizing drugs known as 'benzos'.

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Gavin Samer is the main suspect in the disappearance and murder of 22-year-old Revelle Balmain, who was last seen at Kingsford on November 5, 1994. Samer, who denies any role in Ms Balmain's disappearance, has been charged with assaulting a woman at Bondi in April

Revelle Balmain was a model, dancer and escort who was going to quit prostitution after her appointment with Gavin Samer at his home in Sydney's south-eastern suburbs. There is a $250,000 reward for information leading to the conviction of Revelle Balmain's killer or killers

The woman he allegedly assaulted is now protected from Samer by an interim apprehended violence order taken out by police.

Samer was granted bail on conditions including that he not contact or go near the woman, or any other prosecution witness.

He was not to drink alcohol or take drugs unless they were prescribed by a doctor and an acceptable person had to provide a $1,000 surety.

Samer was also ordered to live at an address in Sydney's far north-west and report to police three days a week.

He said he would be defending the fresh charges and was '100 per cent innocent.' 

Daily Mail Australia is not suggesting Samer was responsible for Ms Balmain's disappearance, only that he was named as the main suspect. 

The keen surfer was 26 when he hired Ms Balmain, 22, to come to his home at Kingsford, in Sydney's south-east, for several hours of sex almost 25 years ago.

Ms Balmain has not been seen since that appointment and Samer was later named as the main person of interest in her disappearance and suspected murder.

The sometime chef subsequently spent at least 15 years living as a recluse in Tasmania but resurfaced in Sydney last year to plead guilty to old theft charges. 

After that court appearance Samer told Daily Mail Australia he believed he was still the main suspect in Ms Balmain's murder but insisted he had not harmed her. 

Asked if he knew he was still the main suspect in Ms Balmain's murder, Samer said: 'I'm well aware of the situation. You don't have to explain it. I've been through it all, don't worry'

Posters alerting the public to Revelle Balmain's disappearance were plastered around Sydney. A coroner found: 'I am firmly of the opinion that her disappearance involves her homicide'

'I'm one of the softest, nicest blokes on the planet,' he said when confronted about the events of November 5, 1994. 'I'm mellow. I'm totally anti-violence.' 

While Samer told Daily Mail Australia he did not kill Ms Balmain, he knew he would continue to be linked to the crime. 

'I'm not worried about getting arrested over the Revelle thing,' he said. 'I've done nothing wrong. I hired a hooker, that's the only thing I did. Big deal.'

Asked directly if he knew he was still considered the main suspect in Ms Balmain's murder, Samer said: 'I'm well aware of the situation.'

'You don't have to explain it. I've been through it all, don't worry. 

'As far as the police are concerned, I'm guilty. As I said, I have no fear about being arrested or charged over murdering Revelle Balmain.

'One, I didn't do it. Two, I've been that heavily checked over. If I was guilty, I'd already be out of jail.' 

Samer said police had last confronted him about Ms Balmain's disappearance in Tasmania more than a decade ago when two officers came to his place of work. 

'As far as this goes, they reckon I'm guilty of murder,' he said. 'I'm very well aware of it. I appreciate these guys have a job to do but the level of harassment was amazing. 

'But as I said, they've been through my house, they've done all the forensics. I've been to the Coroner's court.' 

Samer has been charged with assault occasioning actual bodily harm, stalking or intimidating and possessing a prescribed restricted substance. He was arrested at Bondi on April 12

Samer was named as the main person of interest in Ms Balmain's disappearance during a 1998 coronial inquest which revealed major oversights in the initial investigation by police.

He was to be the blonde, blue-eyed escort's final client before she intended getting out of prostitution and was the last person known to have seen her alive.

Samer has always denied any involvement in Ms Balmain's disappearance and the coroner did not recommend charges be laid against him.

Ms Balmain's body has never been found. In 2008 the NSW Government announced a reward for information that led to the conviction of Ms Balmain's killer or killers would be increased to $250,000.

Gavin Samer pictured by police in 1994 after he hired Revelle Balmain for sex at his home

Samer had paid for sex with Ms Balmain on the Saturday she went missing, while his de facto partner Michelle Oswald-Sealy was away from their Kingsford home for the weekend.

After their appointment, Samer claimed he drove Ms Balmain from his house on McNair Avenue to the nearby Red Tomato Inn about 7pm, but no witnesses came forward to say they saw him or her that night.

Two days after Ms Balmain's disappearance her cork-heeled platform shoe, cane make-up bag, diary and the keys to her Bellevue Hill unit were found scattered through nearby streets. 

Samer told police in his first interview that on the Saturday Ms Balmain disappeared he had drunk 'five twist tops down at the Red Tomato Inn earlier in the day'.

He had also consumed two bottles of Strongbow White cider and then a quantity of champagne while he was with Ms Balmain.

However, the cash register rolls from the bottle shop of the Red Tomato Inn - now the site of Churchills Sports Bar - failed to support Samer's claimed purchases. 

Ms Oswald-Sealy told the coronial inquest her boyfriend had a drinking problem. 

'Initially Gavin drank every night and didn't try to control it,' she said. 

'His gambling and drinking was bad at this stage… he would binge and sneak drinks and cover it up well… it was the worst drinking problem I had ever seen.'

Revelle Balmain had intended quitting prostitution after her last appointment with Gavin Samer. She planned to work as a dancer and had a new boyfriend with whom she was in love

Model Revelle Balmain is last known to have been alive at Gavin Samer's Kingford home 

A summary of the police investigation provided to the coroner in 1998 listed the reasons why detectives continued to consider Samer the main suspect in Ms Balmain's disappearance.

The report said: 'Samer had inexplicable injuries to his neck and injuries to his finger and body, the explanation by Samer of the cause of these injuries was improbable.'

Police also noted how Samer was unable to produce the cheque book with which he allegedly paid Ms Balmain $100 for extra time and services in his home.

Gavin Samer says while police have a job to do he has been unnecessarily harassed  

They noted that property belonging to the dancer was found scattered in the streets near his house and the fact no one could be located who had seen Samer drop Ms Balmain at the Red Tomato Inn as he claimed.

During the inquest, the possibility that two of Ms Balmain's former employers, Select Companions and VIP Escorts, or their associates could have been involved in her disappearance was investigated.

Also considered was a submission from a group of three men about drug-fuelled parties they claimed to have had with Ms Balmain. The submission was later ruled 'unreliable'.

Deputy State Coroner John Abernethy eliminated a theory that Ms Balmain had staged her own disappearance, saying there was 'absolutely no evidence' to support it.

In his May 1999 findings Mr Abernethy ruled Revelle Balmain died on or about November 5, 1994 in New South Wales at the hands of a person or persons unknown.

'Not only is she dead, but I am firmly of the opinion that her disappearance involves her homicide,' he said.

'While Mr Samer certainly had the opportunity to kill Ms Balmain, and rightly in my view is the main person of interest to police, there is no plausible motive proved.' 

Samer is due to appear in Waverley Local Court over the fresh charges on May 28. 

Detectives urge anyone with information about Revelle Balmain's disappearance and suspected murder to contact Crime Stoppers on 1800 333 000.

WHAT THE CORONER WAS TOLD ABOUT GAVIN OWEN SAMER

Coroner John Abernethy did not recommend charges be laid against Gavin Samer

Evidence given at the coronial inquest into Revelle Balmain's disappearance revealed in the first crucial hours after she was reported missing police did not search Gavin Samer's house with a specialist forensics team.

They also did not search his car until nine days later or ask him to hand over the clothes he was wearing on November 5, 1994.

Deputy State Coroner John Abernethy questioned the officer originally in charge of the case, Detective Sergeant Graeme John Mulherin, about the early investigation.

Detective Sergeant Mulherin had been stationed at Rose Bay police station on November 6, the day after Ms Balmain's disappearance.

He told the coroner what inquiries police made of Mr Samer. 

Mr Abernethy: 'As part of the search of his home did you search the clothing that he may have been wearing on the day of 5 November?'

Detective Sergeant Mulherin: 'No, I did not.'

Mr Abernethy: 'Did you ask him what clothing he was wearing, what type of clothing he was wearing on that day and specifically the type of clothing he was wearing immediately before he saw Revelle Balmain and after he left, as he claims, his residence with her?'

Detective Sergeant Mulherin: 'No I did not, no.'

The detective had not asked for Mr Samer's washed clothing because he thought anything that he needed 'wouldn't have been there'.

Mr Abernethy: 'In terms of blood?'

Detective Sergeant Mulherin: 'Yes.'

Mr Abernethy asked if, with hindsight, it might have been a good idea to examine Mr Samer's clothing for damage. 

'Certainly a priority in fact that was a very intense day for us, it was my first day at Rose Bay,' Detective Sergeant Mulherin said. 

'I walked straight into this investigation, we were flat out all day as I say, we've obviously overlooked that, overlooked the viewing of any clothing for damage.'

As Mr Samer had told police he got the scratches on his body while surfing that Saturday morning, officers asked for and obtained his wetsuits.

'I needed to know if those injuries could be caused and/or an injury be caused through a wetsuit,' Detective Sergeant Mulherin said.

Police were also looking for Mr Samer's cheque book because he had said he wrote a cheque for Ms Balmain but it was missing.

Officers visited Mr Samer's house three times - the first time without a warrant and the third time with a warrant to search the property.

The most extensive search happened on November 8, three days after Ms Balmain went missing.

When police came to search the house they did not call in assistance from specialist physical evidence officers. Instead, Detective Sergeant Mulherin relied on his eyesight to look for 'blood, scuff marks, hair adhered to the wall, anything.'

He told Mr Abernethy he was 'physically pulling things apart to have a look to try and, first of all, find the cheque book.'

'Why didn't you call in the crime scene unit, physical evidence people?,' Mr Abernethy asked.

'It was an oversight at that time of the inquiry,' Detective Sergeant Mulherin said.

'In hindsight I'd do a lot of things differently, that would be one of them, certainly.'

Detective Sergeant Mulherin then confirmed Mr Samer's car - in which he allegedly drove Ms Balmain to the Red Tomato Inn - was not checked until November 13, eight days after she disappeared.

'You have to understand, at that stage… we didn't have a body and we weren't certain she was dead at that stage,' Detective Sergeant Mulherin said.

Churchills Sports Bar stands on the site of the Red Tomato Inn on Anzac Parade at Kingsford