A Pennsylvania man has been charged with a weapons offense after his arrest at the entrance to the Holland Tunnel.

Port Authority of New York and New Jersey police say an officer noticed a pickup truck driving through the toll plaza Saturday evening with a large, blue plastic drum in the back.

Officer Evangelos Mageros pulled the truck over to check for hazardous materials and the driver there was a weapon in the drum.

A search found a 12-gauge shotgun and 175 rounds of ammunition. Police say 45-year-old Marlon Murphy, of Easton, Pennsylvania, couldn't provide documentation for the shotgun.

He was charged with unlawful weapons possession. Bail was set at $30,000.

A phone listing couldn't be found for Murphy, and it wasn't immediately known if he'd retained an attorney.

(Copyright 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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