Kabul, Afghanistan (CNN) -- Four U.S. troops were killed Sunday in Afghanistan, the NATO-led International Security Assistance Force said.
Two died following an insurgent attack in eastern Afghanistan, ISAF said in statements. A third died in an insurgent attack in southern Afghanistan, and the fourth died in an improvised explosive device attack in southern Afghanistan.
No further details about the incidents were released. An ISAF spokesman said all four troops were Americans.
Meanwhile, an Afghan and coalition security force detained several suspected insurgents, including a suspected Taliban commander, in Kandahar province on Saturday, ISAF said. The commander is believed to have been "involved in ambushes, improvised explosive device attacks and the acquisition of weapons and munitions," the military said in a statement.
The suspected commander was one of four insurgents detained. The security force then moved to another compound, where three suspected insurgents were detained for further questioning. A hand grenade was found at the scene, ISAF said.
And two Afghan female civilians, one of them a child, were killed when insurgents attacked an Afghan and coalition patrol in the Nahr-e Saraj district of Helmand province on Saturday, the military said. Insurgents attacked the patrol with rocket-propelled grenades and weapon-mounted grenade launchers, according to ISAF. The patrol responded with small arms and mortar fire.
After the engagement, troops received a report that a child was killed by insurgent fire, ISAF said. A woman was taken to a nearby coalition patrol base, where she died of wounds received by an insurgent rocket-propelled grenade.