Two suicide car bombs, including one targeting a joint US-Iraqi army patrol, killed at least 21 people and wounded 63 in the northern city of Kirkuk Sunday, police said. The suicide truck bomb exploded in the morning in the center of the city, killing 18 and wounding 55, said police Brig. Sarhat Qadir. A few hours later, a suicide car bomb rammed into a joint US-Iraqi army patrol in the south of the city, killing at least three bystanders and wounding eight others, Qadir said. He said there were also casualties among the soldiers, but would not provide further details.