DEL VALLE, Texas (KXAN) — The fourth victim in last Thursday’s quadruple homicide at a home in Del Valle has been identified.

David Scott Braswell, 53, of Bastrop, was killed with three others following a house fire on Linden Road on Sept. 8.

Matthew Aaron Barber, 26, of Del Valle, Jacob Derr, 25, of Bastrop, and Brian Lee Satterfield, 41, of Bastrop were identified as victims on Sept. 9. Travis County Sheriff’s Office detectives say their investigation is leading to the possibility the buying and selling of narcotics was a key factor in the events that led to the house fire.

Travis County Fire crews were initially called to the house fire in the 8300 block of Linden Road, about three miles east of the Circuit of the Americas around 5:50 a.m. Thursday, when a neighbor saw smoke coming from the home. The sheriff’s office said the victims’ wounds were inconsistent with a fire and they may have been shot.

Anyone with information on the victims or the incident is asked to call Crime Stoppers at 512-472-8477.

Firefighters working a deadly house fire on Linden Road in Del Valle Sept. 8. 2016. (KXAN Photo)