US troops and airstrikes killed eight suspected insurgents in two provinces bordering Kabul, a US military statement said Monday. Airstrikes and "indirect" fire killed seven militants in Wardak province after they attacked an American patrol in the area Saturday, the statement said. There were no American casualties in the clash, which happened in Sayed Abad district, it said. Another suspected insurgent was killed in a Saturday clash in neighboring Logar province after a joint US-Afghan patrol was attacked, the statement said. Nearly 3,000 US troops moved into Wardak and Logar earlier this year, as part of the planned increase of American military presence across Afghanistan. The additional troops will try to reverse the Taliban gains and help extend security and development in remote areas of the country.