UPDATE: Nothing Found after Threat at Dallas Police HQ

UPDATE: A complete search was done and no threat was found.

DALLAS (CBSDFW.COM) – According to police, a credible threat was made against Dallas Police headquarters late Saturday afternoon.

SWAT in currently on the scene and circling the perimeter.

Sources tell our Brian New that the Dallas Police Department received an anonymous message about a group coming from Houston with the intent to kill officers.

Sources tell our Jeff Paul that one person from the Houston group was spotted in Dallas/Fort Worth.

According to our Jeff Paul, the scene at the Dallas Police headquarters has escalated with officers running around with guns drawn.

The is a developing story.