The Israeli Ynet news site says the soldiers were in a community centre in a village
There was no immediate mention of the Syrian government's involvement and another source told agencies the meeting would be a technical one.
Russia says it believes that previous talks held in Astana, the capital of Kazakhstan, helped jump start United Nations-led peace negotiations in Geneva.
The ceasefire has been repeatedly violated however, while the war against jihadist groups such as Islamic State - which are not included under the ceasefire - has raged on.