WARSAW, December 21. /TASS/. Police in the Polish city of Kalisz have detained a 37-year-old man, who damaged graves of Soviet soldiers, who liberated the country from Nazis in 1945, the regional police spokesman said on Monday.

"Some 11 gravestones were damaged," the police said. "The guard patrol came across the vandal, trying to crash another grave. The man was very aggressive and attacked the police."

More than 300 graves of Soviet soldiers are located at the cemetery in Kalisz. This February the police detained a 67-year-old man who damaged 18 gravestones.