Police detained Jake Hanrahan and Philip Pendlebury in the Baglar district of Diyarbakir province, where they were filming clashes between Turkish security forces and Kurdish militants, the sources said.
Read: Turkey does not plan to send ground forces to Syria: foreign minister
The two Britons and their Turkish translator were in close contact with the Kurdistan Workers' Party (PKK) militants, the same sources said.
Read: Pak-Iran-Turkey: Meeting set to finalise ECO train
A 2-1/2-year-old ceasefire between Turkey and Kurdish militants collapsed in July after a group close to Kurdistan Workers Party (PKK) rebels shot dead two police officers. Ankara retaliated with strikes against the group in Iraq and Turkey.
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