Berwick police are investigating a report that a man exposed himself to a woman on Portland Street on Sunday.

Police say the man appeared to be in his forties or fifties and had gray hair and glasses. The man was wearing a blue hooded sweatshirt and was driving a green Chevrolet pickup truck with a back rack and Massachusetts plates. He was last seen driving toward North Berwick.

Anyone with information is asked to call Berwick police at 698-1136.