Deric Madison, right, admitted killing Josh Tubbleville, left, in 2014. Madison has been sentenced to life in prison.

Deric Madison, 25, was sentenced to life in prison for the 2014 murder of Josh Tubbleville, 33.

Tubbleville and Madison had left a nearby restaurant and were in Tubbleville’s car when Madison shot him. They crashed into the Shell station on the corner of Oak Lawn and Lemmon avenues. Security footage from the gas station captured Madison fleeing the car.

Madison admitted killing Tubbleville but said he was defending himself. Family members testified he came from a broken home but was a good father to his three-year-old son.

Dallas County detention officers painted a picture of Madison as a violent inmate who had to be separated from other inmates and was involved in a number of fights.