Afghan authorities are holding two people in connection with last year's murder of four journalists. An aide to interim Interior Minister Yunus Qanooni confirmed the arrests and said the two were being questioned.
The four journalists were shot dead last November after being ambushed by armed men as they drove along a mountain road from Jalalabad in eastern Afghanistan to Kabul.
Australian Harry Burton, 33, a Reuters Television cameraman and 33-year-old Azizullah Haidari, an Afghan-born photographer for Reuters, were killed along with Spanish journalist Julio Fuentes of El Mundo and Italian Maria Grazia Cutuli, a correspondent for Corriere della Sera.
The journalists were travelling in a convoy through the eastern Afghan province of Nangarhar when armed men stopped them near a bridge at Tangi Abrishum some 90 km (55 miles) east of Kabul.
Four other Western reporters were killed in Afghanistan last year during the US-backed campaign to oust the country's former Taliban rulers and track down Saudi-born militant Osama bin Laden.
French radio reporters Johanne Sutton, 34, and Pierre Billaud, 31, and German journalist Volker Handloik, 40, a freelance working for Stern magazine, were killed after Taliban forces ambushed Northern Alliance fighters in northeast Afghanistan in early November.
Gunmen shot dead Swedish television cameraman Ulf Stromberg, 42, during an armed robbery in the northern city of Taloqan later that month.
Daniel Pearl, South Asia bureau chief of the Wall Street Journal, vanished in Pakistan's southern city of Karachi on January 23 as tried to make contact with radical Islamic groups.