"One more group of bomb disposal technicians went to Syria to take part in demining of Palmyra. Fifty professionals, including dog handlers," Russia's Channel One television said.
According to the report, the group will clear, in particular, ancient monuments from explosive devices.
The first group of bomb disposal technicians went to Syria earlier this week.
On Sunday, the Syrian army supported by militia and the Russian Aerospace Forces recaptured the historic city, which had been under the control of the Daesh militant group since May 2015.
Before the retreat, militants from the terrorist group, which is prohibited in a number of countries, including Russia and the United States, planted bombs and land mines all over Palmyra. The Syrian army has already started demining operations in the liberated city.
Russia has pledged to deploy sappers and specialized robots to Syria to assist Syrian specialists in their activities and has invited other countries to follow suit.