Schools in seven Tennessee counties were evacuated Friday morning due to bomb threats.

No explosives were found at any of the schools, said Lt. Bill Miller of the Tennessee Highway Patrol. Emergency crews were sent to schools in Murfreesboro, Millersville, Greenbrier and Columbia. Threats were also reported at schools in Wilson, Knox and Lewis counties.

Students, teachers and staff at Millersville Elementary were safely escorted to Millersville City Hall about 420 feet away on 31W Louisville Highway, Sumner County Sheriff Sonny Weatherford said. The sheriff’s office received a call at 9:48 a.m. on Friday, but nothing had been found nearly two hours later.

Millersville students were dismissed, but teachers were allowed back in the building to finish the day, Miller said.

Robertson County investigators spent most of the day at Greenbrier Middle School but found nothing, according to Greenbrier Deputy Chief Randy Pack. School officials there were notified that that a person was inside the building with a bomb, officials said.

Pack said the threat was called into the school at about 11:05 a.m. Students were transferred to nearby Greenbrier High.

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