SAN CARLOS CITY, Pangasinan: Police launched a massive manhunt for the four principal suspects in the ambush of former Pangasinan governor and congressman Amado Espino Jr. after the presiding judge of the Regional Trial Court in San Carlos City recently issued a warrant for their immediate arrest.

Police Col. Redrico Maranan, Philippine National Police Pangasinan provincial director, identified the suspects as Armando Mangrobang-Frias, Bernie Latonio-Resultan, Albert Palisoc and a certain Roseller, all residents of Urbiztondo town.