At least 60 people have been killed and another 150 wounded in a suicide attack in the northern Iraqi city of Tikrit. The bomber reportedly detonated an explosive vest in a line of people applying for jobs with the police. It was the deadliest incident in Iraq since October 31, when a siege at a Baghdad church killed at least 53 people. Meanwhile, three U.S. soldiers were killed in Iraq on Saturday, making it one of the deadliest days for U.S. forces there in months. This weekend also marked the 20th anniversary of the first U.S. attack on Iraq in what the military named Operation Desert Storm. Estimates of the Iraqi dead reach as high as 3,600 civilians and some 35,000 soldiers.