An 18-year-old turned himself in to Garland police after his older brother was fatally shot Monday morning.

Brendan Demarcus Edwards (Garland Police Department)

Brendan Demarcus Edwards was charged with murder and remains in jail. His bail has not yet been set.

He and his brother, 26-year-old Ryan Christopher Smart, had gotten into an altercation around 4 a.m. in Smart's home in the 200 block of East Taylor Street, near Embree Park, police said.

Police believe Edwards then shot Smart.

First responders took Smart to a hospital, where he died from his injuries.

Edwards had left the home by the time police arrived, officials said.