Government forces have captured three leading Shining Path members. In April 2000, Commander José Arcela Chiroque, called "Ormeño", was captured, followed by another leader, Florentino Cerrón Cardozo, called "Marcelo", in July 2003. In November of the same year, Jaime Zuñiga, called "Cirilo" or "Dalton", was arrested after a clash in which four guerrillas were killed and an officer was wounded. Officials said he took part in planning the kidnapping of the Techint pipeline workers. He was also thought to have led an ambush against an army helicopter in 1999 in which five soldiers died.