The newspaper, "La Repubblica," says it lost contact with reporter Daniele Mastrogiacomo on March 4.
Editor in Chief Ezio Mauro says Mastrogiacomo was on assignment in Kandahar Province in Afghanistan's volatile south. The newspaper is denying Taliban allegations that Mastrogiacomo was involved in espionage.
In Afghanistan, a Taliban spokesman claimed militants detained a Briton on March 5 who told them he had previously worked as a journalist for "La Repubblica."
The Taliban spokesman identified the man as Dan Kell, saying he was a spy for the British military and was captured in the Nad Ali district of Helmand Province.
British and Afghan forces are conducting a military offensive in Helmand Province aimed at eliminating Taliban fighters within a 150-kilometer radius of the Kajaki hydroelectric dam. The battle area includes Helmand's Nad Ali district and parts of neighboring Kandahar Province.
(compiled from agency reports)