A former Georgia Southern University student pleaded guilty Tuesday to issuing terroristic threats via computer. Under the plea deal, Caleb Jamaal Clemmons, 20, was sentenced to six months in Bulloch County Jail and five years probation. He was credited with the six months he spent in jail because he was unable to make $20,000 bond after he was charged with posting a threat against the Georgia Southern campus on his Tumblr blog in February, Ogeechee Judicial Circuit Assistant District Attorney Joseph Cushner said Tuesday.