A roadside bomb exploded in a small side street in central Baghdad on Saturday, killing one man and seriously wounding two in a passing car, police and witnesses said. The blast in Baghdad's Karradah neighborhood, a main shopping and commercial district, almost completely destroyed the blue Peugeot car. Residents identified the three men as Iraqis who worked as security guards at the nearby al-Sadir Hotel, a heavily fortified complex where U.S. civilian contractors and other Westerners involved in Iraq's reconstruction effort are known to live and work. The three men were wearing uniforms, body armor and carrying assault rifles, according to the witnesses.