U.S. Defense Secretary Robert Gates paid a surprise visit to Afghanistan on Tuesday, a private television channel reported.
"The U.S. Secretary for Defense Robert Gates arrived in Afghanistan today to review the progress has been made by the U.S. troops," Tolo television broadcast in its news bulletin, Xinhua reported.
However, Afghan officials when approached expressed ignorance.
President Barack Obama also paid an unannounced visit to Bagram airfield the main U.S. military base 50 km north of capital city Kabul on Friday night.
More than 140,000 NATO-led soldiers with over 90,000 of Americans have been stationed in Afghanistan to help stabilize security there in the war-torn nation.
...