A 19-year-old woman and her friend were allegedly attacked with a chemical substance suspected to be acid by unidentified persons when they were travelling on a motorcycle in west Delhi’s Vikaspuri, the police said on Wednesday.

The incident took place on Tuesday. The victim and her friend refused to give a statement after the incident, the police said.

However, they approached the Vikaspuri police station on Wednesday and a case under relevant sections of the IPC was registered, Deputy Commissioner of Police (West) Monika Bhardwaj said.

Her friend who suffered 10% to 15% burn injuries was discharged from hospital, the officer said. The girl was also given first-aid treatment and was discharged on the same day, she said.

According to doctors, the woman and her friend were attacked with acid. However, they are awaiting forensic reports for final confirmation on the nature of injury, the officer added.

The police are also questioning a suspect in this connection. Further investigation is on, said the officer.