BILLERICA —   Chief Roy Frost reports that the Billerica Police Department identified three out-of-town juveniles as being responsible for a threatening telephone call that was made to Billerica Memorial High School on Friday.

An ongoing investigation into the matter has also determined that none of the three juveniles involved have access to weapons, or the ability to act on the threat.

On Thursday, June 5, at 1 p.m., the Billerica Police Department began investigating a threat that was called into Billerica Memorial High School. In accordance with pre-established procedures, the school was placed into lockdown.

As the investigation continued and an initial threat assessment was conducted, students were sent home early. Police, who had a school resource officer at BMHS, increased their presence at all schools in town.

The investigation into the threat continued into Thursday night. Police were able to identify three juveniles from Charlestown as being responsible for the threatening call.

In coordination with the Middlesex District Attorney’s Office, appropriate juvenile court charges will be pursued.

“It’s unfortunate that this happened, but I am pleased to report that we have identified the juveniles behind this threatening call and determined that this was an attempted prank gone wrong,” said Chief Frost. “At no time were our students or our community in danger. I want to thank Billerica Public Schools for their response to this incident. We prepare and train together for exactly this reason. I also want to thank the Northeastern Massachusetts Law Enforcement Council Special Response Team, as well as our police colleagues in Burlington, Bedford, Tewksbury, Wilmington and Chelmsford for their assistance.”