Threat from Houston group puts Dallas PD on high alert

DALLAS, TX (WPVI) -- SWAT officers were called to the Dallas Police Department headquarters as a precaution after receiving a threatening tip on Saturday afternoon.

According to an internal police memo obtained by our sister station KTRK, a group from Houston was allegedly driving to Dallas with the intent of killing more police officers.

After receiving reports that a suspicious person had entered the building's parking garage, police conducted a manual search and secondary canine search of the garage.

Just before 8 p.m. Central Time, police officials declared the scene clear, saying the searches yielded no suspects.

Employees were allowed to return to their cars and leave the premises.

Contrary to reports circulating on social media, no shots were fired throughout the ordeal.