ORANGEBURG (AP) -- Authorities say they arrested two people in the shooting death of a South Carolina State University student and determined the killing happened after a dispute during an on-campus drug deal. The South Carolina Law Enforcement Division said Tuesday that 22-year-old Ray Alston Jr. and a 16-year-old male have each been charged with murder in the April death of 22-year-old Jonathan Bailey. SLED agents say the three men met at the Orangeburg university for a drug deal and Bailey was shot in the chest as he tried to run away after an argument over how much marijuana was being sold. Investigators say fingerprints, phone records, witness statements and ballistics tests led them to the suspects. SLED says more arrests are expected. It wasn't immediately clear if Alston had an attorney.