At least 80 people have been killed in the northern Iraqi city of Kirkuk in a coordinated attack by a suicide truck bomber in a crowded market and a separate car bomb parked on a busy street, police say. South of Baghdad, thousands of U.S. troops swooped on a suspected safe haven used to reinforce militants fighting in the capital, the military was quoted as saying by Reuters. Iraqi police said 136 people were wounded in the Kirkuk blasts Monday and warned that the death toll could rise further. A Reuters cameraman on the scene described carnage after the truck bomb in the market, near an office of the Patriotic Union of Kurdistan, the party of Iraqi President Jalal Talabani. The explosion scattered bodies across the market, set dozens of cars on fire and trapped passengers on a bus where they burned to death, the cameraman said. The car bomb exploded in a commercial area called Iskan, near shops and a bus garage, police said. The two blasts came within minutes of each other, police said.