Two U.S. soldiers were killed and four wounded in an ambush just hours after a fatal car bombing that killed 10 people - including the driver - in the same Baghdad neighborhood, the U.S. military said Friday. Earlier Thursday, a bomber crashed a white Oldsmobile loaded with explosives into a police station in the Sadr City neighborhood, killing himself and nine other people and wounding as many as 45. Also Thursday, gunmen - one dressed as a Muslim cleric - shot and killed a Spanish military attache. The killing of the Spanish military attache happened across town in the upscale Mansour area about 30 minutes before the car bombing. Jose Antonio Bernal Gomez, an air force sergeant attached to Spain's National Intelligence Center, was shot to death after four men, one dressed as a Muslim cleric, knocked on the door of his home, according to a Spanish diplomat in Baghdad who spoke on condition of anonymity. A guard in the area, also speaking on condition of anonymity, said Gomez opened the door to the gunmen. When they tried to grab him, he ran outside and was shot. The guard said he heard six shots and Gomez was hit in the head at least once. American, Iraqi and Spanish authorities were investigating the attack, U.S. State Department spokesman Richard Boucher said. Commenting on Thursday's accidents, L. Paul Bremer, the top U.S. official in Iraq, emphasized his government's commitment to fighting terrorism, branding the perpetrators of attacks in Iraq as individuals who have shown "wanton disregard" for the lives of innocent people. **PHOTO CAPTION*** U.S. President George W. Bush, October 9, 2003. (REUTERS/Jason Reed )