Tens of thousands of Sunni Arabs demonstrated in Baghdad Friday to protest what they said were flawed December 15 parliamentary elections. Preliminary results show a strong lead for the main Shi'ite coalition.

There were also demonstrations in Tikrit and Mosul

Meanwhile, Sudan's Foreign Ministry says six Sudanese, including a diplomat, have been kidnapped in Baghdad.

The ministry says the victims were seized after attending prayers Friday. The abducted diplomat was identified as the second secretary at Sudan's mission in Baghdad.

Elsewhere, insurgents ambushed an Iraqi checkpoint in Adhaim, about 70 kilometers north of Baghdad, killing eight Iraqi soldiers and wounding 17.

A suicide bomber also killed at least four people at a Shi'ite mosque in Balad Ruz, about 75 kilometers northeast of Baghdad.

The U.S. military also says two U.S. soldiers were killed Friday when their vehicle struck a roadside bomb in Baghdad.

Some information for this report provided by AP and Reuters.