The all clear has been given at the Collin County Courthouse in McKinney after a bomb threat prompted the evacuation of the facility Wednesday morning.
According to county officials, judges were told to abandon their docket and evacuate the building on the 2100 block of Bloomdale Road sometime around 9 a.m. NBC 5 has learned that the McKinney Police Department was called at about 8:50 a.m. and warned there was at least one device in the courthouse building and another in the parking lot.
In the call to 911, the caller said: "Yes, you need to let someone know that there are two bombs placed at the Collin County Courthouse. If all courts are not canceled today, one will go off on the outside, one will go off on the inside. People will die today."
The caller then hung up.
The order to evacuate the courthouse was given and, as people began to exit the courthouse, officers from McKinney, the Collin County Sheriff's Department and the Texas Department of Public Safety were arriving.
A preliminary search of the building turned up no obvious devices. Members of the Plano Police Department's bomb squad were called to the courthouse to perform a more thorough sweep of the facility, still nothing was found.
About three hours after the call was received, the courthouse was reopened without incident.
Investigators hope that by releasing the 911 call the caller can be identified. Anyone that recognizes the voice in the call is asked to notify the Collin County Sheriff's Department at 972-547-5350. Callers who wish to remain anonymous can call 972-547-5115.
Auxiliary buildings and sub-courthouses in the county were not impacted by the bomb threat.
NBC 5's Randy McIlwain and Catherine Ross contributed to this report.