Press freedom campaigners have staged a protest outside the Georgian Interior Ministry against the arrest of four press photographers.
Those detained are accused of spying for an unnamed foreign country.
One of those arrested in overnight raids is the personal photographer of Georgian President Mikhail Saakashvili.
The photographer’s wife has also been arrested, as well as a Frankfurt-based photojournalist and another freelancer.
Merab Chikovani, the lawyer for one of the accused, said: “As far as we know, we were told this case is regarded as secret, and this means we have no right to inform the public about the developments.”
It is reported that a photographer who works for the Associated Press was also arrested but then later released.
He refused to make any comment to reporters.
Few details about the spying allegations have been released by the authorities.