ST. PETER, Minn. (AP) - A rapist who broke out of a state treatment center here along with three other men remained on the lam Sunday, authorities said.

Michael Dale Benson, 42, squeezed through a broken window Saturday night with the three others, who were later caught. Police scaled back their ground search efforts in the city after 3 p.m. Sunday, believing Benson may have left the area in a stolen car, said police Chief Matt Peters.

"We feel that we've run out of our leads in all that regards," he said.

Authorities had contacted other law enforcement agencies in the state and region following investigative leads on Benson's whereabouts, although Peters would not be specific. Benson is from the Douglas County area, authorities said.

Authorities were looking for a stolen green, four-door 1997 Ford Crown Victoria with license plate number MXB801 and trying to track down Benson's associates and family members, said Public Safety spokesman Kevin Smith.