Mesquite police arrested the suspected gunman in a shooting outside a Twin Peaks restaurant.
The arrest happened Sunday morning. The shooting at 18995 LBJ Freeway happened Saturday morning.
25-year-old Devoris Arnold of Dallas was arrested and charged with murder and aggravated assault with a deadly weapon.
Police say Arnold shot and killed 35-year-old Ahmad Williams during an argument.
A second gunshot victim, 28-year-old Anthony Cole, was treated and released from the hospital.