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MEMPHIS, Tenn. (WREG) — A man who hijacked a plane and threatened to crash it into a Walmart in Tupelo, Mississippi has died in federal custody, according to the Federal Bureau of Prisons.

Corey Wayne Patterson, 29, died at the Federal Detention Center in Miami, Florida on Nov. 14. According to the Federal Bureau of Prisons, he was found unresponsive but his cause of death is unknown at this time.

Authorities say on September 3, Patterson had taken off in a Beechcraft King Air 90 from the Tupelo Regional Airport around 5 a.m. and circled the air for around five hours. He was the only person on board.

Patterson was employed at the airport for 10 years and responsible for fueling planes, which gave him access to the aircraft.

Images courtesy of the Mississippi Highway Patrol

At one point, a Walmart in Tupelo was evacuated after the pilot threatened to crash the plane into the business, according to the Tupelo Police Department.

The plane eventually landed in a field near Ashland around 10:30 a.m. and Patterson was arrested. No one was injured during the incident.

The Federal Bureau of Prisons said Patterson arrived at the Federal Detention Center in Miami on November 10 under pretrial status.