Brandon McCall is accused of killing Officer David Sherrard after the 13-year veteran officer responded to a disturbance at an apartment complex.
Sherrard was one of the officers who responded to the disturbance, which was reported about 7 p.m. When police arrived, they found Rene Gamez wounded and began to administer first aid, Chief Jimmy Spivey told the Dallas Morning News .
As officers tried to enter Gamez's apartment, they were fired upon and Sherrard was shot. Gamez also died of his wounds.