At least 20 people have been killed and as many again have been wounded in a suicide bomb attack in Iraq. The victims were police recruits queueing outside an interior ministry building in west Baghdad. A man walked up to the group before detonating his explosive device in the middle of the crowd.A car bomb also exploded in the south of the city near a police station, killing five and wounding 12. Two police colonels were also gunned down in their cars, one in Mosul and another in Musayyib just south of Baghdad. A leading aide to Iraq’s top Shi’ite cleric, Ayatollah Sistani was buried on Saturday amid emotional scenes. Thousands of people flooded the streets of the capital to say farewell to Kamal al-Dine al-Ghoreifi, who was murdered yesterday along with two colleagues as they went to Friday prayers.