1920, the local Bolshevik Armenians aided by the Muslim population, attempted a coup d'état in Alexandropol against the Dashnak government of Armenia. The uprising was suppressed by the Armenian government on May 14 and its leaders were executed. However, during another Turkish invasion, Turkish troops attacked Alexandropol and occupied the city on 7 November 1920. Armenia was forced to sign the Treaty of Alexandropol on December 3 to stop the Turkish advance towards Yerevan, however a concurrent Soviet invasion led to the fall of the Armenian government on December 2. The Turkish forces withdrew from Alexandropol after the Treaty of Kars was signed in October 1921 by the unrecognized Soviet and Turkish governments. Under Soviet rule, the name of the city was changed in 1924 to Leninakan after the deceased Soviet leader Vladimir Lenin. The city suffered an earthquake in 1926, when many of its significant buildings were destroyed including the Greek church of Saint George. Leninakan became a major industrial center in the Armenian Soviet Socialist Republic and its second-largest city, after the capital Yerevan. The city suffered major damage during the 1988 Armenian earthquake, which devastated many parts of the country. The earthquake occurred along a known thrust fault with a length of . Its strike was parallel to the Caucasus range and dipped to the north-northeast. Bruce Bolt, a seismologist and a professor of earth and planetary science at the University of California, Berkeley, walked the fault scarp in 1992 and found that the vertical displacement measured along most of the length with the southwest end reaching . The earthquake had a disastrous impact on the city, as many buildings are still not recovered. , according to some news websites, between 4,000 and 5,000 residents of Gyumri remain homeless, although there are no official figures provided by the local authorities of the city. At the time of the breakup of the Soviet Union, the city was renamed Kumayri between in 1990 until 1992 when it was finally given the name Gyumri. The Russian 102nd Military Base is located in the city. Gyumri was celebrated as the Capital of Culture of the Commonwealth of Independent States for 2013. Major events took place in the city on 30 June 2013. On 12 January 2015, Valery Permyakov, a serviceman from the Russian 102nd Military Base, murdered seven members of an Armenian family in Gyumri. On 25 June 2016, Pope Francis