The car bombing at the al-Taf mosque in Baghdad occurred just as worshippers were leaving services marking one of Islam's most important holidays, Eid al-Adha, or Feast of Sacrifice, Jan 21, 2005. (Xinhua/Reuters photo)

A car bomb exploded outside a Shiite mosque packed with worshippers celebrating a major Muslim holiday Friday, and a suicide driver blew up an ambulance at the wedding of a Shiite couple south of the capital. At least 21 people died and dozens were wounded, including the bride and groom.

Also Friday, a U.S. soldier died in an operation north of Baghdad, and an Italian soldier was killed by a burst of gunfire while patrolling in a helicopter near the southern city of Nasiriyah. Insurgents attacked several designated polling places outside Baghdad.

The car bombing at the al-Taf mosque in Baghdad occurred just as worshippers were leaving services marking one of Islam's most important holidays, Eid al-Adha, or Feast of Sacrifice. It was the second car bombing at a Shiite mosque in Baghdad this week.

Later in the day, a suicide driver rammed an ambulance into a crowd of Shiites celebrating a wedding near Youssifiyah, a village 12 miles south of the capital. Seven people were killed and 16 wounded.