A former Kentucky State University student who pulled a handgun in a crowded KSU student center has pleaded guilty but mentally ill to several charges and released to his mother’s custody. Christopher Sims, 25, pleaded guilty but mentally ill Friday before Franklin Circuit Judge Thomas Wingate to unlawful possession of a weapon on school property among several other charges stemming from the incident. Sims threatened to kill everyone in KSU’s student center cafeteria March 2, 2010, but his 9mm Hi-Point handgun jammed, according to court records of the incident. He ran to a bathroom, cleared the jam and ran to a nearby computer lab.