Major international news organisations have urged armed Syrian rebel groups to stop kidnapping journalists, and to free those who are currently held.
The 13 organisations, including the BBC, have signed a letter to the rebelswarning that the abductions threaten the coverage of the Syrian conflict.
It is believed that more than 30 journalists are currently being detained in Syria.
Many kidnappings have been downplayed in the hope of aiding negotiations.
On Tuesday the Spanish newspaper El Mundo decided to publicise the abduction of two journalists in Syria in September after indirect communications with their captors led to "no result".