Two bombs have killed at least 10 people in Ramadi, western Iraq, BBC News said.

One bomb went off inside a Sunni militiaman's car, killing him and other officials, and a second device went off minutes later as people gathered around the wreckage.

The attacks come a day after a series of bombings struck cafes in and around the capital, Baghdad.

There has been a recent surge in sectarian violence in Iraq, with last month the bloodiest since June 2008. Public places such as mosques, restaurants and local markets have been singled out for attack.

Many of Friday, June 28 victims were members of the Sahwa militias formed in 2006 to fight al-Qaeda militants. Since then, the group has been a target for Sunni insurgents who consider its members traitors for remaining loyal to the Shia-led government.

Tensions between Iraq's Shia Muslim majority and minority Sunnis have been steadily growing since last year. Sunnis have accused Prime Minister Nouri al-Maliki of discriminating against them - a claim the government denies.