 Around the same time, a group calling themselves the "Polish Revolutionary Home Army" seized the Polish Embassy in Bern, Switzerland on 6 September 1982, taking several diplomats as hostages.However, this turned out to be an apparent provocation by the communist Polish secret services aiming to discredit the Solidarity movement.After the "Wujek" Coal Mine incident in Katowice on 23 December 1981, the United States imposed economic sanctions against the People's Republic of Poland.