Two bombs were detonated five minutes apart Tuesday in a used motorcycle marketplace in central Baghdad, killing at least 15 people and wounding 74 others, police said. The first bomb was attached to a motorcycle in the market. As the curious gathered to look at the aftermath, a suicide car bomber drove into the crowd and blew up his vehicle. Authorities said at least three policemen were among the dead. The blast appeared to target the mainly Shi'ite neighborhood near the market but also was near the Sheik al-Gailani shrine, one of the holiest Sunni locations in the capital.