A series of car bombs has hit several mostly Shia neighbourhoods in Baghdad, killing at least 15 people, according to police officials.

Of the four bombs that struck the capital on Wednesday morning, one exploded in the sprawling Sadr City district, while another hit the suburb of Kazimiyah, police officials said. They also said that a bomb exploded in Shaab and a fourth struck in the impoverished Shammaiya neighbourhood.

The attacks also wounded 46 people.

Violence has been escalating in Iraq and last year, the country saw its highest death toll since the worst of the sectarian bloodletting began to subside in 2007.

On April 30, Iraq is to hold its first parliamentary election since the withdrawal of US troops in late 2011.

Source: AP