Students and staff have returned to the campuses of Rowan University after a call was received that multiple bombs had been placed at all three locations.

"Please evacuate all Rowan University campuses immediately. There is a bomb threat under investigation," the university said on Twitter at 11:30AM Tuesday.

"In an abundance of caution, the university’s Department of Public Safety, in consultation with the Office of the President, ordered an immediate evacuation of all facilities," spokesman Joe Cardona said.

By 1:50 p.m., the school said university police completed an inspection of all buildings and gave the all-clear for a return.

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Cardona told the Townsquare News Network that there are some classes in session at the main campus in Glassboro, the medical school in Camden and the Stratford campus.

"There were people in labs, workers of course and in the summer we have 200 kids living on campus year round," Cardona said.

He referred questions about the threat to the Gloucester County Prosecutor's Office, which on Tuesday afternoon did not respond to our request for more information.

University police asked anyone with information about the threat to call Gloucester County Prosecutor’s Office at 856-881-1500. Anonymous tips can be provided by texting GLASSPD and your tip to 847411 (Tip411).

It was the second threat to a New Jersey school on Tuesday. Asbury Park High School and the Thurgood Marshall Elementary School were both put on lockdown after a threat was received. The district's other schools sheltered in place. All schools were reopened around noon.

The threat also interrupted voting at Asbury Park High School, the only school used as a polling location in the city.

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