Between 1928 and 1930 the Hotel Carlton was built in the place of Hotel Zöldfa, on Séta square (now Hviezdoslavovo square). Hotel Zöldfa included Lajos Kossuth, Franz Joseph I., Alfred Nobel, and Albert Einstein amongst its guests. The 1930 census shows that the Hungarian population decreased to under 20% of the city, and resulted in Hungarian language signs being removed. Between 1938 (October) – 1939 (March), Bratislava became the seat of government of the autonomous Slovakia within Czechoslovakia (see "e.g." Jozef Tiso). Between 1938 (November) – 1945, the future Petržalka borough was occupied by Nazi Germany, and from October 1938 to April 1945, the future Devín borough was part of the Lower Austria area of the German Third Reich. After the break-up of Czechoslovakia, Bratislava became the capital of the First Slovak Republic in 1939. By 1945, most of the city's approximately 15,000 Jews were expelled and sent to concentration camps. The Bratislava oil district included the Apollo oil refinery and was bombed on 9 September 1944 during the German occupation. The Soviet Red Army took Bratislava on 4 April 1945.