Palestinian police killed a top Al Aksa Martyrs' Brigades operative Saturday in the northern West Bank town of Tubas, and five others were wounded in the ensuing shootout between police and gunmen, security officials said. The clash began when police ambushed Raed Abdel Razik, the leader of the Fatah-affiliated group in town, as he emerged from his home. Adbel Razik, 26, was wanted by police for a series of shootings in town and security officials said he opened fire at police while holding a hand grenade. Police said they fired back, hitting Abdel Razik, and the grenade blew up in his hand. He was taken to Jenin hospital and officials said he later died of his wounds. Adbel Razik's family then fired at a police station and a heavy exchange of fire erupted. Adbel Razik's brother was wounded as was a policeman and three bystanders.