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Tampa, Florida -- A man is in jail tonight after authorities say he tried to rob a Bank of America with a fake explosive device.

Michael Hamson, 59, reportedly walked into the Bank of America at 8302 West Hillsborough Ave. and slid a note to the teller demanding money and threatening that he had a bomb. He allegedly lifted his shirt and displayed a container with metal clips attached and a cell phone taped to a pen.

The Hillsborough County Sheriff's Office says the teller gave Hamson an undisclosed amount of money and activated the alarm system.

As Hamson left the bank, a security guard reportedly pursued him on foot through the parking lot, where deputies took him into custody.

The sheriff's office says the device Hamson had was found to be a hoax.

Hamson was just released from the Hillsborough County Jail on January 10 for other unrelated felony charges.