BAGHDAD, Iraq (CNN) -- A roadside bomb in southern Iraq struck a bus on Tuesday, killing 16 passengers and wounding 22, an Interior Ministry official said.
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Meanwhile, five people were killed and 14 wounded when a suicide bomber slammed into a checkpoint in northern Iraq, the U.S. military said.
In Baghdad, one person was killed and eight people were wounded Tuesday when a gunman shot at a minibus carrying employees from Iraq's Electricity Ministry, an Interior Ministry official said.
In northern Iraq, authorities found a grave containing 20 bodies, police said.
Police and a local citizens group found five children, six women and nine men in the grave, just northeast of Samarra.
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Other mass graves have been found recently, including one discovered Saturday with up to 100 bodies just north of Baquba in Diyala province.
More...
See also:
8 U.S. troops, 14 Iraqis die in wave of insurgent bombings
3 More GI Deaths Reported In Iraq
Iraq, once secular, now dominated by religious parties
Exhaustive review finds no link between Saddam and al Qaida
Al-Qaeda in Iraq may try for spectacular attacks
Iraq will not be a Qaedistan
