BARROW COUNTY, GA — Authorities are investigating after at least five schools in Barrow County received bomb threats Friday morning, which prompted soft lockdowns and increased security across the district.

The lockdown has been lifted.

School officials say the threats came in through a series of phone calls made to several campuses. As a precaution, affected schools were placed on a soft lockdown while law enforcement agencies responded and conducted safety checks.

The sheriff’s office says bomb threats were called in to County Line Elementary School, Yargo Elementary School, Kennedy Elementary School, Winder Elementary School and Apalachee High School. The central office also received a call.

All students and staff are safe. Two deputies will be stationed at all Barrow County schools for the rest of the day.

The sheriff’s office and school district are working with the FBI, GBI and Georgia Emergency Management Agency to identify the person responsible.