Feds just arrested first person in connection with Las Vegas massacre — here's what he's accused of

Federal authorities arrested a man on Friday who they say broke federal law when he sold Las Vegas shooter Stephen Paddock armor-piercing ammunition, according to AZCentral.com.

That same man held a press conference on Friday declaring his innocence and denying any involvement with Paddock or the massacre.

What happened?

Authorities arrested Douglas Haig and charged him with conspiracy to manufacture and sell armor-piercing ammunition, according to a criminal complaint filed in a Nevada federal court.

The complaint alleges investigators found two unfired .308 caliber rifle rounds in Paddock's Vegas hotel room with Haig's fingerprints on them. Authorities also found Haig's tool marks on the bullets, despite "adamantly" telling investigators they wouldn't.

The complaint says authorities executed a search warren on Haig's Mesa, Arizona, home on Oct. 19, where they seized additional armor-piercing ammunition. Police were led to Haig after they found a box of ammunition in Paddock's hotel room with Haig's name and address on it.

Haig met with Paddock several times, the first being last August at a gun show in Las Vegas. Then, in September, Paddock approached Haig at a gun show in Phoenix. Lastly, Paddock visited Haig's home to purchase ammunition. In all, Haig admitted to selling the mass killer 720 rounds of ammunition.

Authorities said Haig never had a license to sell ammunition, but he did so, operating an internet business that sold reloaded ammunition nationwide.

Nevada federal district Judge Carl Hoffman issued a warrant for Haig's arrest shortly before noon EST on Friday. Haig was later released from jail, where he spoke to the media and declared his innocence.

What did he say?

"I hope today ends [the threats], when people realize that I wasn’t in collusion with Paddock, that I was not in any way, shape or form associated with the horrible crime that he committed," Haig said.

"I had no contribution to what Paddock did. I had no way to see into his mind. The product that I sold him had absolutely nothing to do with what he did. I’m a vendor, I’m a merchant whose name was released," he explained.

If found guilty, Haig faces a maximum of 5 years in federal prison.