https://www.foxnews.com/us/aurora-shoot ... -first-day
Martin purchased the gun that was used in the shooting in 2014, police said. Ziman said Martin purchased the weapon after being issued a firearm owner's identification card and after passing the initial background check.
ILLINOIS WORKPLACE SHOOTING LEAVES 5 DEAD, SHOOTER KILLED, OFFICIALS SAY
Five days after taking possession of the weapon, a Smith and Wesson 40 caliber handgun, Martin tried to obtain a concealed carry permit.
But during the fingerprinting and background process it was discovered that he had a felony conviction for assault in Mississippi, police said. The date of conviction was in 1995. Police said the conviction would not necessarily have shown up on the background check for a gun owner's license.
Because of the conviction, Martin's concealed carry permit was rejected and his license to own a weapon was revoked by Illinois State Police, police said.
Ziman said as part of the investigation into the shooting, investigators would try to determine why Martin never surrendered his weapon to police as he should have.(emphasis mine)