Six people are dead, including four children, and two others wounded after a shooting Wednesday at a home in suburban Houston.
The Harris County Sheriff's Office says deputy constables responded to the home located in Spring, north of Houston.
Ryan Sullivan, a spokesman for the Harris County Sheriff's Office, tells NBC News that the two wounded victims were transported to local hospitals – one via helicopter and another via ground ambulance.
Sullivan did not immediately characterize whether the incident was a random, targeted or domestic-related incident.
The Harris County homicide and crime scene unit is expected to take control of the investigation.
Several officers were engaged in a standoff with the suspected gunman after a vehicle pursuit, and negotiators were speaking with the suspect, who remains in a vehicle surrounded by police.
NBC News reported the gunman surrendered to authorities shortly after 11 p.m. Wednesday.
Officials say five of seven people shot at a home near Houston, Texas, have died. The shooting took place late Wednesday afternoon in Spring, a suburb north of Houston.
NBC station KPRC reported that the suspect was intercepted by police and after a chase was cornered in his vehicle in a cul-de-sac about four miles from the shooting scene in Spring, Texas.
One of the wounded was flown to a hospital from the scene and the other taken by ambulance, said Ryan Sullivan, spokesman for the sheriff's office.
Another Harris County sheriff's official said it might be a domestic violence incident, but investigators were trying to gather additional details.
NBC station KPRC of Houston reported that the suspect was believed to be a relative of the victims.
The shooting scene is in a neighborhood of middle-class homes, with tree-lined streets and the occasional backyard pool.