The woman ran over a metal cylinder on Broad Street near Target around 12:30 a.m. There were wires around the cylinder, police said.
She picked it up, drove to the police station and walked into the police lobby and placed it on front counter. The sergeant immediately ordered her to take it outside and place it on the grass outside headquarters and the bomb squad was called.
Traffic was rerouted from Hoyt and Bedford streets.
It was found not to be a bomb, said police.
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