KABUL, Afghanistan — U.S. and Afghan troops have abandoned a remote outpost in eastern Afghanistan where militants killed nine American soldiers this week, officials said Wednesday.

Compounding the military setback, insurgents quickly seized the village of Wanat in Nuristan province after driving out the handful of police left behind to defend government offices, Afghan officials said.

Some 50 officers were headed to the area to try to regain control, said Ghoolam Farouq, a senior provincial police official.

Sunday's attack by some 200 militants armed with machine guns, rocket-propelled grenades and mortars was the deadliest for the U.S. military in Afghanistan in three years. Rebels fought their way into the newly established base, wounding another 15 Americans and suffering heavy casualties of their own, before the defenders and warplanes could drive them back.