The Latest on an Arizona man who sold ammunition to the gunman who carried out the deadliest mass shooting in modern U.S. history (all times local):

3:45 p.m.

An Arizona man who sold ammunition to the gunman in the deadliest mass shooting in modern U.S. history has been charged with manufacturing armor-piercing bullets.

A complaint says unfired armor-piercing bullets found inside the Las Vegas hotel room where the attack was launched on Oct. 1 contained the fingerprints of ammunition dealer Douglas Haig of Arizona.

The complaint filed Friday in federal court in Phoenix says Haig didn't have a license to manufacture armor-piercing ammunition.

He was charged shortly before holding a news conference Friday. He said he noticed nothing suspicious when he sold 720 rounds of ammunition to Stephen Paddock in the weeks before the attack that killed 58 people.

Haig is a 55-year-old aerospace engineer who sold ammunition as a hobby for about 25 years.

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11:50 a.m.

An Arizona man who sold ammunition to the gunman in the deadliest mass shooting in modern U.S. history says his one-time customer didn't raise suspicions that he planned to commit any crimes.

Douglas Haig said at a news conference Friday that he met Stephen Paddock at a Phoenix gun show in the weeks before the Oct. 1 shooting in Las Vegas that killed 58 people.

The sale was later completed at Haig's home in the Phoenix suburb of Mesa.

Haig was named as a "person of interest" in the investigation.

But a law enforcement official has since told The Associated Press that he isn't believed to have committed a federal crime or to have had any knowledge of the attack.

The official wasn't authorized to discuss the investigation and spoke on condition of anonymity.

— Associated Press writer Michael Balsamo

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12:30 a.m.

An Arizona man plans to speak out about his experience in selling ammunition to the gunman in the deadliest mass shooting in modern U.S. history.

Douglas Haig is scheduled to hold a news conference Friday in Chandler to discuss his sale to Stephen Paddock.

This week, Haig said he couldn't detect anything wrong with Paddock.

Haig was named as a "person of interest" in the Oct. 1 shooting in Las Vegas that killed 58 people.

But a law enforcement official has since told The Associated Press that Haig isn't believed to have committed a federal crime or to have had any knowledge of the attack.

The official wasn't authorized to discuss the investigation and spoke on condition of anonymity.

It's unknown whether the ammunition Haig sold to Paddock was used in the attack.