(CNN) A friend of Connor Betts accused of providing the Dayton, Ohio, shooter with the body armor and a 100-round double drum magazine used during his attack is facing federal firearms charges.

Hours after the August 4 attack, agents with the FBI and the Bureau of Alcohol, Firearms, Tobacco and Explosives visited the home of Ethan Kollie in nearby Kettering, according to a probable cause affidavit. Kollie told the agents he enjoyed firearms, owned two pistols and had bought body armor and a firearms accessory for Betts earlier this year, the affidavit says.

Ethan Kollie

The 24-year-old allowed agents to search his home, where they smelled marijuana and saw a water pipe, commonly used to consume cannabis, and a Draco pistol, the affidavit says.

Agents interviewed Kollie again, this time at his place of employment, on Thursday. During that interview, Kollie told agents he had done hard drugs, marijuana and LSD with Betts several times a week between 2014 and 2015, the affidavit says.

He also told agents that he had smoked marijuana every day for the past decade, according to the affidavit.

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