A suicide bomber blew himself up outside a mosque where a remembrance ceremony was being held Friday for a top Afghan police commander, killing four police officers, authorities said. According to AP, security forces confronted the bomber, who was dressed in traditional robes, before he entered the mosque in Kunduz City in the northern province of Kunduz, said provincial police chief Sami Ullah Qatra. A scuffle broke out and the bomber detonated his explosives, the force of the blast blowing out the glass windows of the mosque, Qatra said. Six police officers were also wounded in the attack.