Several people were killed in Iraq's southern Shia provinces of Amara and Diywaniya early on Monday when three car bombs exploded in public markets, Reuters reports.
According to the news agency, medics and police sources said at least 11 people died in the attacks.
An army raid on a Sunni Muslim anti-government protest camp on Tuesday has sparked the most widespread violence since the withdrawal of US troops in 2011.
On Saturday, Iraqi Prime Minister Nouri Maliki warned of the dangers of sectarian conflict in the country.
