KABUL, Afghanistan — The Taliban seized control of a district in eastern Nuristan Province on Tuesday, chasing the governor and the police from the district capital, according to both Afghan officials and a spokesman for the Taliban.

It was the second Taliban success in recent days in the general area of the strategic Pech Valley, which American troops are in the process of withdrawing from and turning over to Afghan authorities.

“The white flag of the Islamic Emirate of Afghanistan is flying over the Want district center, while some policemen of the puppet administration flee toward the provincial capital after slight resistance,” said the Taliban spokesman, Zabiullah Mujahid, in a statement to news organizations circulated by e-mail. He was referring to the district more commonly known as Waygal.

The Nuristan Province police commander, Gen. Shams-ul-Rahman Zahid, confirmed that the police had fled their barracks and district government buildings in town of Waygal, the capital of Waygal district, leaving the Taliban in what he said was temporary control of the district. The district governor, Mulavi Zia-ul-Rahman, was also said to have fled.