Federal agents have arrested a convicted felon for providing the gun that was used to kill former-NFL quarterback Steve McNair, according to the Associated Press. Prosecutors in Nashville will announce the charges later Friday, the newswire says. McNair, who appeared in the Pro Bowl three times, was shot to death on July 4 by his 20-year-old mistress Sahel Kazemi. Kazemi killed herself after shooting McNair. Officials have yet to name the suspect who provided the gun.