– Members of the doomsday cult Aum Shinrikyo carry out the Tokyo subway sarin attack, killing 14 people and leading to over a thousand injured. The attack remains the deadliest terrorist incident in Japanese history. March 22 – Cosmonaut Valeri Polyakov returns after setting a record for 438 days in outer space. March 25 – Boxer Mike Tyson is released from prison after serving nearly 3 years. March 26 – The Schengen Agreement, easing cross-border travel, goes into effect in several European countries. March 31 TAROM Flight 371 from Bucharest to Brussels crashes shortly after takeoff killing all 60 people on board. American singer Selena is murdered by her fan club president, Yolanda Saldívar. April April 7 – First Chechen War – Samashki massacre: Russian paramilitary troops begin a massacre of at least 250 civilians in Samashki, Chechnya. April 19 – Oklahoma City bombing: 168 people, including eight federal Marshals and 19 children, are killed at the Alfred P. Murrah Federal Building and 680 are wounded by a bomb set off by Timothy McVeigh. April 30 – The United States government stops funding the NSFNET, making the Internet a wholly privatized system. May May 7 – Jacques Chirac is elected president of France. May 10 – At Vaal Reefs gold mine in Orkney, a runaway locomotive falls into a lift shaft onto an ascending cage and causes it to plunge to the bottom of the deep shaft, killing 104. May 11 – More than 170 countries agree to extend the Nuclear Nonproliferation Treaty indefinitely and without conditions. Sega launches the Saturn game console in North America four months before its initial scheduled date. May 13 – The 6.6 Western Macedonia earthquake strikes northwestern Greece with a maximum Mercalli intensity of VIII (Severe), injuring 25 and causing $450 million in damage. May 14 – The Dalai Lama proclaims 6-year-old Gedhun Choekyi Nyima as the 11th reincarnation of the Panchen Lama. May 16 – Following the Tokyo subway sarin attack two months earlier, Japanese police besiege the headquarters of Aum Shinrikyo near Mount Fuji and arrest cult leader Shoko Asahara. Further police operations result in over two hundred arrests and thirteen members of the cult, including Asahara, are sentenced to death. May 24 – AFC Ajax wins the UEFA Champions League at the Ernst Happel Stadium in Vienna by defeating A.C. Milan 1–0. May 25 – The Army of Republika Srpska (VRS)