(Updates with toll) KIRKUK, Iraq, April 2 (Reuters) - A suicide attacker driving a truck packed with explosives blew himself up in the northern Iraqi city of Kirkuk on Monday, killing up to 11 people and wounding 90, police said. The attacker rammed his vehicle into the main gate of the police criminal investigation department and detonated the bomb, triggering a blast that echoed across the city. Police Brigadier Sarhat Qadir said 11 people were killed, seven houses destroyed and 35 cars set ablaze. He said the toll was expected to rise. Another police official, Brigadier Torhan Abdul-Rahman, said six people were killed and more than 100 people wounded. A Reuters reporter at the scene saw a fireman holding the bloodied body of a young child. It was not clear whether the child was alive or dead. Insurgents have increasingly used truck bombs in attacks in recent months. A truck bomb in the northern town of Tal Afar last Tuesday killed 152 people, making it the deadliest single insurgent attack of the four-year-old war.