It happened in the 300 block of Broadmore near FM-521 around 8 p.m.
People wearing masks drove up and opened fire on the people who were sitting inside a vehicle in a driveway, according to the Fort Bend County Sheriff’s Office.
The two people who died were juveniles, deputies said. A third person was also shot and was taken to a hospital in serious condition.
The victims may have returned fire before the suspects fled the scene, according to investigators.
One person was detained for questioning, but their involvement in the incident wasn’t immediately clear.