At least eight people were killed and more than 50 wounded when two roadside bombs exploded in quick succession at a popular market on the northern outskirts of Iraq's capital on Friday, police and hospital sources said.

The attack was the latest in a wave of bombings this month that have targeted mainly Shi'ite Muslim pilgrims and religious sites and have revived concerns of widespread sectarian violence.

The first explosion struck a main market area of Husseiniya - a predominately Shi'ite area on the edge of Baghdad - where people were shopping for groceries and other goods, sources said.The second blast occurred shortly after in the same area, as security forces and people gathered to tend to the injured, one police source said.

Tensions have been high in Iraq since the departure of U.S. troops in December especially due to feuding between Iraq's main Shi'ite, Sunni and Kurdish political factions over power.

While overall violence in Iraq has dropped since the peak of sectarian fighting in 2006-07, recent bombings against Shi'ites have reignited fears the country risks sliding back into major bloodshed. On Monday, a suicide bomber killed at least 15 people mourning at a Shi'ite funeral in the northern Iraqi city of Baquba.