"Today, after midnight, a man born in 1977 threw eggs at the wall of the Russian embassy in Tallinn. A police patrol detained the man on the spot, and criminal proceedings were instituted against him," the police said in a statement.
Additional information will be provided during the investigation, the police said, without providing other details.
The detained man is believed to be a Russian journalist Arkady Babchenko, previously listed as a foreign agent in Russia, the Delfi news website reported, citing a pro-Ukrainian activist. Estonian police have not yet officially confirmed this information.