(Updates toll, adds previous attacks) BAGHDAD, Feb 20 (Reuters) - A suicide bomber killed at least seven people and wounded 15 in an attack on mourners at a funeral tent in northeastern Baghdad on Tuesday, police said. The blast occurred in the mainly Shi'ite area of Palestine Street. U.S. and Iraqi troops are conducting a major security crackdown aimed at stemming the relentless bloodshed in Baghdad. Earlier on Tuesday, two car bombs in southern Baghdad killed up to 10 people, police said. The first car bomb exploded near a fuel station in the district of Saidiya, killing five people and wounding 11, police said. But another police source said that attack killed three people and wounded 12. Another car bomb exploded in Doura, in the south of Baghdad, killing five people and wounding seven at a vegetable market.
