Anwar Ghazali was convicted of second-degree murder after a four-day trial, Shelby County District Attorney General Amy Weirich said Friday.
He then ran outside to follow the teen and fired several times.
Afterward, he returned to the store and told a witness, "I think I shot him."
He did not call the police, and neither did any other customer inside the store, WMC reported.
Harris was shot at least three times and was left to bleed out, Fowler said.
His body was found two days later in a yard near the store with gunshots in the back of his thigh, Weirich said.
The shooting, which sparked protests outside the store , has similarities to other instances of black men shot and killed over otherwise minor incidents. »