Bombings in central Iraq killed six people and wounded 22 on Tuesday

Bombings in central Iraq killed six people and wounded 22 on Tuesday, a day after a string of countrywide attacks left 50 people dead in a wave of violence ahead of the first elections since US troops withdrew.
  
In Aziziyah, a car bomb killed four people and wounded 15, while a roadside bomb killed a soldier and wounded two near Mussayib, both south of the Iraqi capital, security and medical officials said.
  
North of Baghdad, a car bomb killed a civilian and wounded two others as well as three police officials in Tarmiyah, they said.
  
The spate of bombings comes a day after more than 30 attacks across Iraq killed 50 people and wounded almost 300, raising further questions about the credibility of April 20 provincial elections.
  
A total of 14 election hopefuls have already been murdered and just 12 of the country's 18 provinces will be taking part in the vote.