KABUL, Afghanistan – An American bombing that killed up to 90 Afghan civilians last month was based on false information provided by a rival tribe and did not kill a single fighter, the president’s spokesman said Sunday. The claim contradicted a U.S. contention that the Aug. 22 raid on the western village of Azizabad killed up to 35 Taliban fighters. “There was total misinformation fed to the coalition forces,” Humayun Hamidzada, the spokesman for President Hamid Karzai, told The Associated Press.