"Russian military police units are continuing the patrol on the routes ... in Aleppo province, ... in Raqqah province, ... in Hasakah province", Zhuravlev said.
The rear admiral added that Russian combat aircraft also carried out patrols of several routes in the area.
The patrols are part of a Russia-Turkey deal on creating a buffer zone in northern Syria.
In late October, Russian President Vladimir Putin and Turkish leader Recep Tayyip Erdogan struck a memorandum in Russia's Sochi that envisions a variety of patrol missions in the border area carried out by the Russian military, Syrian border guards and Turkish troops to ensure the implementation of the deal.