Baghdad ? Two suicide bombers attacked a wedding caravan Thursday as it drove through a crowded market district past bystanders cheering the bride and groom, killing at least 35 people and wounding 65 in a town northeast of Baghdad, officials said.

In the capital, a bomb-rigged parked car exploded when a U.S. patrol went by in a crowded area earlier in the day, leaving a U.S. soldier and at least nine Iraqis dead. The attack also wounded 26 Iraqis and two American soldiers.

The terror attacks came amid heightened worries that al-Qaida in Iraq is regrouping despite recent security gains by U.S.-led forces, which find themselves facing intensified fighting with Shiite extremists, particularly in Baghdad’s militia stronghold of Sadr City.