A breakaway region of Moldova reported a grenade attack on a government building on Monday in what was likely a false flag operation conducted by Russian forces, according to a report.

The Institute for the Study of War, a Washington, D.C., think tank, said Monday that the likely false flag attack involved “unknown forces” using two grenade launchers to strike the Ministry of State Security building in Transnistria, a region of Moldova along the Ukrainian border that has been controlled by Russian-backed separatists since 1992. The grenade attack was followed by reports of an explosion on Tuesday at a Russian TV and radio tower in Transnistria. False flag attacks and recent claims by Russian officials of the “oppression” of Russian speakers in Moldova may be used as a pretext by the Kremlin to move forces into the region or recruit Moldovans to fight for Russia in Ukraine. Moldovan President Maia Sandu called for a meeting of the country’s Supreme Security Council on Tuesday because of the recent uptick in attacks in Transnistria.