A 21-year-old man accused of shooting his friend in the back was found guilty Thursday, the state attorney's office said.

In December 2010, Antonio Adams-Maxwell and Victor Sumner got into an argument. To get away from Adams-Maxwell, Sumner got into a truck driven by his friend Clinton Gupton. As they were driving away, Adams-Maxwell shot at the truck, hitting Gupton in the back.

Gupton's 7-year-old son, who was also in the truck, and Sumner were not hurt. Gupton recovered from his injuries.

Adams-Maxwell said he was acting in self-defense. However, a jury thought otherwise. He was found guilty of attempted second-degree murder, two counts of attempted manslaughter and shooting into a vehicle.

“This conviction is a just result given the defendant’s violent act of shooting at three people attempting to flee from him,” said Assistant State Attorney Nick Lake.

Adams-Maxwell will be sentenced next week. He faces a minimum of 20 years in prison with a possible life sentence.