Multiple law enforcement agencies, including the FBI, Department of Public Safety and local police, responded to the Congregation Beth Israel synagogue in Colleyville, Saturday, after reports of a man holding people inside hostage.
The Colleyville Police Department first tweeted about the situation shortly after 11:30 a.m.
Footage from a witness showed several police vehicles and officers, including a SWAT truck, at the scene.
Police said all residents in the immediate area were being evacuated.