BERLIN (AP) -- Several teenagers sprayed graffiti on a piece of art outside one of Berlin's most famous museums and that the vandalism was unrelated to the damaging of more than 60 other art works on the city's Museum Island that were smeared with an oily liquid early this month, police said Saturday.
A huge granite bowl in front of the Altes Museum, which is part of the German capital's museum complex and houses antiquities, was defaced Friday night by some teenagers and adults, Berlin police said. Two of the suspects were temporarily detained.
Museum Island is a UNESCO world heritage site in the heart of Berlin and one of the city's main tourist attractions.
Dozens of other exhibits at the Museum Island complex were vandalized Oct. 3. Investigators said they had watched hours of surveillance camera footage but not found any obvious sign of anyone applying the liquid.
Museum experts have said the motive remains a mystery and there appeared to be no thematic link between the targeted works. They expressed optimism that the apparently random damage can be repaired.
Berlin police said the graffiti sprayed on the granite bowl did not have any political content or appear related to the damaging of the other art works.