Three bomb blasts have hit a busy market in Iraq's capital, killing at least eight people and wounding 26 others, police and hospital sources said. The blasts occurred in Shurja, an important commercial district in central Baghdad, on Sunday at the beginning of a Muslim festival. Officials said the bombs, planted on Sunday in different parts of the market, killed sellers and shoppers buying goods for the Eid al-Adha feast. Iraqi Shia Muslims mark the beginning of the Eid on Monday, while Sunni Muslims do so on Sunday. A Reuters witness close to Shurja market said: "I can see fire and black smoke mounting and a large number of fire engines, ambulances and police patrols rushing to the market." A source at al-Kindi hospital in Baghdad said it had received eight dead and 26 wounded from the attack. Iraqi forces are preparing to take full responsibility for security by year-end when all US troops pull out of the country, nearly nine years after the US-led invasion. Military leaders have expressed concerns that militants might ramp up attacks as the 33,000 US troops left in Iraq pack up to leave.