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A 63-year-old man described as a habitual offender was arrested Monday in Marrero with a large amount of money just hours after he robbed a bank in the Westside Shopping Center North, Gretna police said.

Ronald Hillis was booked on counts of armed robbery and being a convicted felon in possession of a firearm after police said he robbed the Capital One Bank at 91 West Bank Expressway in Gretna about 2 p.m.

The robber walked up to a teller and told her, “This is not a joke,” then demanded money, Gretna Deputy Chief Anthony Christiana Jr. said. He said Hillis flashed a silver and black handgun when she hesitated.

When the teller tried to give him cash with a dye pack, which can be used to identify the money as stolen later on, the robber handed the dye pack back and threatened to shoot her, police said. The teller then handed over the money.

Another employee was also stripped of a “stack of cash,” according to police.

As Hillis left the scene in a beige 2002 Suzuki SUV with a Texas license plate, police said, he sideswiped a woman stopped in traffic near West Bank Expressway and Stumpf Boulevard.

Police were able to track the SUV to an apartment complex at 640 Westwood Drive in Marrero, and neighbors identified Hillis as the vehicle’s driver.

Not far away, in the 6900 block of West Bank Expressway, police said they found him leaving a lounge with a large amount of money. He was arrested about 5:15 p.m.

Gretna police said Hillis admitted to the crime. They described him as a violent “career criminal” who is wanted in Conroe, Texas, for armed robbery and a parole violation.