A car bomb explosion at an outdoor market has killed seven people in Baghdad, officials say.

Police officials said the Sunday evening blast took place in the Shia district of Sadr city and wounded 20 others.

Hospital officials confirmed the death toll.

Iraq has seen a spike in violence since last year, with the death toll climbing to its highest levels since the worst of the country's sectarian bloodletting between 2006 and 2008.

Sunday's attack came ahead of Iraq's planned parliamentary elections on April 30.

More than 9,000 candidates will compete for 328 seats.

Source: AP