NEW : Prosecutors continue to seek the death penalty for Frein , says district attorney . ` ` Justice will be served , '' says Pennsylvania Sen . Tom Corbett . Frein was armed with a pistol and a knife , a source says . The self - styled murderer is suspected in the September 12 ambush of police officers .
NEW : Prosecutors intend to seek the death penalty for Frein , says district attorney . `` Justice will be served , '' says Pennsylvania Gov . Tom Corbett . Frein was armed with a pistol and a rifle , a source says . The self-styled survivalist is suspected in the September 12 ambush of two officers .