NEW : Police said the bomb struck as forces were walking toward a park . Six Afghans dead , 20 were wounded , the provincial governor said . Taliban spokesman Zabihullah Mujahid said foreign and internal security forces were killed and injured , he said . Three American soldiers were injured , the governor said . The attack took place in a Kabul night market .
NEW : Police said the bomb struck as forces were walking toward a park . Six Afghans dead , 20 were wounded , the provincial governor said . Three American soldiers were injured , the governor said . The attack took place in a Kabul night market .