BERLIN (AP) — German Chancellor Angela Merkel said Wednesday there’s “hard evidence” of Russian involvement in a cyberattack on the German parliament in 2015 that reportedly also involved the theft of documents from her own parliamentary office. A German daily reported last week that federal prosecutors have issued an arrest warrant against an alleged officer with Russia’s GRU military intelligence agency identified who already is being sought by U.S. authorities. News magazine Der Spiegel reported Friday that correspondence from Merkel’s parliamentary office was among the documents targeted in the 2015 hack. Prosecutors haven’t confirmed those reports. Russian officials have repeatedly denied any involvement by Moscow in the 2015 hacking attack on the German parliament.