Manila, Jan. 21 -- Police authorities have arrested four persons during separate law enforcement operations in North Cotabato province on Monday. Colonel Maximo Layugan, North Cotabato police director, said the law enforcement operations were separately conducted in the towns of M'lang, Pres. Roxas, and Antipas. During the 10 a.m. anti-drug operation, police have arrested Teofilo Andrade, 44, of Barangay Sangat, M'lang, North Cotabato. "Andrade is listed in the police watch-list as most wanted and a high-value target in town," Layugan said. Also arrested was Archie Lubon Verdon, 36, of Barangay New Cebu, Pres. Roxas town after two suspected sachets of shabu were confiscated from him at a police checkpoint operation along the national highwa...