A Massachusetts drug dealer who was caught last year smuggling heroin and cocaine into Maine was found guilty of a related drug charge Tuesday after a two-day trial in U.S. District Court in Portland.

Jean Valbrun, 27, of the Mattapan neighborhood of Boston, was convicted by a federal jury of possession with intent to distribute heroin and crack cocaine.

Valbrun was the driver of a vehicle with two young children as passengers on March 16, 2014, when he had 225 grams of heroin and 106 grams of crack cocaine hidden in the trunk as he drove to a gas station in Auburn, according to court records.

Authorities had tracked Valbrun by intercepting phone calls through a broader wiretap investigation into a drug ring operating in Greater Lewiston-Auburn, court records state.

Judge Jon Levy ordered Valbrun into the custody of the U.S. Marshals Service.

Valbrun’s sentencing date was not immediately available. He faces up to 20 years in prison and a fine of as much as $1 million.