In the early 1970s, Sweden was rocked by a number of terrorist acts perpetrated by Croatian separatists. Some of the most significant cases were the 1971 Yugoslavian embassy attack in Stockholm and the hijacking of Scandinavian Airlines System Flight 130 a year later. The inception of the first Terrorist Act in 1973 was an immediate policy upshot of this, which among other things gave the police the right to deport people affiliated with terrorist organisations without delay. These incidents also led to internal changes within the Department of Security, which received more resources. On 28 February 1986, Prime Minister Olof Palme was assassinated by an unknown gunman. The Department was not widely criticized, partly because Palme himself had declined protection on the night of the murder. It nevertheless sparked the resignation of the National Police Commissioner Nils Erik Åhmansson and the head of the Department, Sune Sandström, following the revelation of the Ebbe Carlsson affair in 1988.