The US-led coalition in Afghanistan said Friday its soldiers had killed more than 10 militants in an operation to find a Taliban rebel involved in bomb attacks and helping foreign militants. The announcement came as a US defence official confirmed that two soldiers killed in attacks on Thursday were from the United States, which has about 33,000 soldiers in the fight against extremists in Afghanistan. Soldiers searching for the wanted Taliban subcommander came under fire Thursday when they entered a compound in Kapisa, northeast of Kabul, the coalition said in a statement. "The force returned fire, killing the militants," it said, adding that more than 10 were killed. The statement did not say if the targeted man, also accused of helping foreign fighters in Afghanistan, was among the dead. Troops in the eastern border province of Khost meanwhile arrested two men it said were with the Taliban's Haqqani network, the statement said.