Seth Fontenot, 19, is now charged with dealing drugs in addition to murder. The Lafayette Parish District Attorney's Office charged Fontenot with two counts of distributing amphetamines. They say he sold drugs to students at the University of Louisiana at Lafayette, according to the paper work obtained by KLFY .
In February, Fontenot was charged with one count of first-degree murder and two counts of attempted first-degree murder after prosecutors say he fired three shot at a truck carrying three teens.
St. Thomas More Catholic High School freshman Austin Rivault, 15, was killed. The other teens were injured. Fontenot told detectives he shot the to scare the boys. He thought they were breaking into his truck.