Police said a man wearing a yellow surgical mask robbed a credit union Monday morning in the Penobscot County town of Enfield.

The Penobscot County Sheriff’s Office is investigating the robbery, which took place around 8:15 a.m. at the Penobscot Federal Credit Union at 98 Bridge St.

The sheriff’s office posted a press release and a still photograph of the robber on its Facebook page. He is described as a white male about 5 feet, 8 inches tall. He has dark hair and weighs between 185 and 200 pounds.

He was last seen wearing a Navy blue hoodie, dark bluejeans, light gray-colored sneakers and a yellow surgical mask.

The robber fled on foot after a teller handed him an undisclosed amount of money. The credit union is offering a cash reward for information leading to the arrest and conviction of the man. The Maine State Police and the FBI are involved in the investigation.

Anyone with information about the man is urged to call the sheriff’s office at 945-4636.

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