The plane crashed at a cornfield in a remote mountain village in Bagabag town in Nueva Vizcaya province, killing a woman and three men on board, Bagabag police chief Chevalier Iringan said.
Capt John Andrews, deputy chief of the Civil Aviation Authority of the Philippines, said an investigation was underway to determine the cause of the crash in mountainous Nueva Vizcaya, which is about 200 kilometers north of Manila.