A judge sentenced 18-year-old Clarence Johnson Monday to life in Angola prison.

WWL-TV

A picture of Clarence Johnson, which was taken by his mother, shows the teen holding a pistol and a fist full of cash.

Johnson was found guilty of murder last week in a high-profile case where investigators said he killed 17-year-old Robert Dawson with a gun that was given to him by his mother.

At the trial, prosecutors introduced Dawson's dying declaration to an officer that identified Johnson as the shooter. An eyewitness also recounted the shooting.

Johnson shot Dawson eight times, including once in the back.

Vanessa Johnson, 45, is accused of giving her son a pistol February 7, 2007 and telling him to "Go get them all," after he lost face to a neighborhood in a fight.

Vanessa Johnson is awaiting her trial. She faces principal to second degree murder charges.