LEWISTON — A Massachusetts man is in trouble in Maine after police say they found 20 pounds of marijuana in his pickup truck during a weekend traffic stop.

Mark Lyons of Braintree was held on $20,000 bail on a charge of unlawful trafficking in scheduled drugs after he was pulled over Sunday afternoon on Interstate 95 in Lewiston.

Police tell the Sun Journal that police became suspicious when Lyons refused to drive past an officer during an unrelated traffic stop, despite being waved through.

Police followed him and observed him swerving between lanes.

Police smelled marijuana during the traffic stop and after Lyons assented to a search, found the pot in the bed of the truck along with $2,000 cash in the cab.