Poland on April 29 said it had seized a high-school building near Moscow's embassy in Warsaw meant for the children of diplomats, a move the Russian envoy called "illegal." The spat over the 1970s multistory building, nicknamed the "spy nest" by Warsaw citizens, has been going on for a year. "This building belongs to the Warsaw City Hall," Polish Foreign Ministry spokesman Lukasz Jasina told AFP, adding that the move followed a bailiff's order. "This is an illegal act. An intrusion on a diplomatic facility," Moscow's envoy, Sergei Andreyev, told the RIA Novosti news agency.