A car bomb exploded Sunday morning at a police station in this town west of Baghdad, killing 12 people and wounding 19 others, Iraqi police said. But an emergency room administrator at a hospital in the nearby city of Ramadi said there were 18 people killed in the blast and more than 20 injured. Many of the victims were police officers, said the hospital administrator, Haitham Bahar Taha. A U.S. Army officer at the scene estimated the total number of wounded at about 20. The attack in Khaldiyah, about 50 miles west of Baghdad, occurred at 8:40 a.m. near the main police station, witnesses and the U.S. military said. No American soldiers were in the area when the bomb exploded, said the officer who asked not to be named. U.S. troops blocked off the area and two helicopters were seen hovering overhead. **PHOTO CAPTION*** US soldiers walks past a car on a Baghdad highway Wednesday Dec. 10, 2003 after the vehicle exploded late Tuesday night. (AP Photo/Karim Kadim)