Four gunmen, including at least one suicide bomber, attacked an army recruitment center in northern Afghanistan early Sunday, killing five members of the Afghan security forces, a local official said. Insurgents also attacked a bus filled with army officers in the capital Kabul, wounding four, the Associated Press reported. In the attack in northern Kunduz province, militants stormed the recruitment center at daybreak and at least one of them was able to detonate his explosives, said Hamdullah Danishi, the province's deputy governor. The blast shattered windows in nearby homes and gunshots could still be heard coming from the site hours later. The dead included three Afghan soldiers and two police officers, he added. Danishi says three of the attackers were killed in the initial assault but one was still alive and fighting with government forces.