In the latest attack on a monument to the Soviet army in Bulgaria, one in the north-eastern city of Silistra was daubed with red paint to depict the soldiers as having bloody hands.
Silistra municipality said that it had responded after residents sent it photographs of the daubed monument.
The porous stone was very difficult to clean, but staff had, despite the cold weather, managed to remove the paint, the municipality said.
The municipality issued a reminder that the law forbade damaging memorials and offenders were subject to penalties.
Monuments in Bulgaria to the Soviet army commemorate the invasion of the country in September 1944, which led to several decades of communist rule.
Some of these monuments are frequent targets, notably the Monument to the Soviet Army in capital Sofia and the Alyosha statue on a hill in second city Plovdiv.
The Russian embassy in Sofia frequently has complained about these attacks on the Soviet Army monuments.
(Photos: Silistra Municipality)