An FBI task force is involved in an investigation into a threat received at the Tamaqua Area High School office on Tuesday, prompting a lockdown, large police presence and monitored dismissal.

“The threat was a general death threat basically towards anyone who was in the building at the time,” Trooper Ethan M. Brownback, public information officer, said.

“It was not geared towards anyone or any group specifically,” he said.

Local, state and federal law enforcement, which includes the FBI task force, are now involved, Brownback said.

“This is still an active investigation trying to identify possible suspects,” he said.

The incident happened Tuesday afternoon, when school officials received “a disturbing call threatening the safety of our students,” Superintendent Ray Kinder said Tuesday in a letter to parents.

School officials contacted law enforcement and placed the district on restrictive movement for the protection of staff and students, as police descended on the high school/middle school complex.

Local and state police shut down the roads around the complex, searched vehicles and areas around the schools, and a state police helicopter circled above, as they investigated the threat.

Once officials believed the threat level was mitigate, the district moved to a controlled, monitored dismissal with law enforcement and district administration present, Kinder said.

Law enforcement conducted a sweep of the building after the students left, and gave “an all clear” assessment, he said.

The district is continuing to work with state and local police, Kinder said Thursday.

“We continue to be vigilant with our security measures and are committed to the safety of our students and staff,” he said.