Authorities continue to work to learn a motive for the Saturday mass shooting that left nine people dead and seven others after a gunman opened fire at Allen Premium Outlets, an outdoor mall in Texas.
One motive police are probing is whether the incident was an act of domestic terrorism, multiple law enforcement sources told ABC News.
The shooter wore patches or stickers on his clothing which raises suspicion that he may have leaned on right-wing extremism, the sources added. However, they said no motive has yet been established.
Federal agents were seen at a home in the Dallas area believed to be associated with the shooter. Investigators are going through the suspect’s electronic devices and social media to uncover what led to the shooting, the sources said.
Police retrieved a rifle used in the shooting and additional firearms in a vehicle associated with the shooter.
The Texas Rangers are the lead agency on the case, with assistance from the FBI, ATF, and Allen police.
Police fatally shot the alleged gunman, who was among the seven people killed at the shooting scene, Allen Police Department officials said. Nine additional people were transferred to hospitals, where two later died, ABC News reported.
The hospitalized victims’ ages range from 5 to 61 years old, authorities said.
Multiple law enforcement agencies responded to calls of an active shooter around 3:30 p.m. on Saturday.
“This is a tragedy. People will be looking for answers,” Allen Police Chief Brian Harvey said during a press briefing. “We’re sorry that those families are experiencing that loss.”
None of the victims’ names have been released. Information about the suspect has not been released publicly.
