SUGAR LAND, TX — The Fort Bend County Crime Stoppers and the Fort bend County Sheriff's Office have increased the cash reward for information leading to the arrests of the people who shot and killed a 38-year old woman On Dec. 5.

Lieu Nguyen was shot to death in what investigators believe may have been a road rage incident. The shooting was reported by the victim's former husband, who found her body in the front seat of her car at about 7:40 p.m. near the intersection of Addicks-Clodine Road and Bissonnet Road.

READ: Woman Found Shot To Death Near Mission Bend Investigators said Nguyen had called her children's father for help after she'd been shot, but she was already dead when he arrived.

Nguyen, who worked at an insurance agency, left work at about 6 p.m., and drove to a nearby grocery store. On her way home, investigators believe she got into some type of disagreement on the road, and was subsequently shot several times.

Investigators have spoken with a witness who reported hearing gunfire and said he saw the shooting, KPRC reported.

Meanwhile, investigators are also looking at surveillance footage from area homes and businesses to find clues to the killer's identity.

"If anyone has information concerning this murder case, they need to contact Crime Stoppers," said Sheriff Troy Nehls. "Someone out there knows about this case. Call Crime Stoppers and help solve this heinous crime." Fort Bend County. Crime Stoppers will pay up to $10,000 for information that leads to an arrest in this case.