Members of the <a href="https://en.wikipedia.org/wiki/Aum_Shinrikyo" id="mw9Q" rel="mw:WikiLink" title="Aum Shinrikyo">Aum Shinrikyo</a> cult <a href="https://en.wikipedia.org/wiki/Matsumoto_sarin_attack" id="mw9g" rel="mw:WikiLink" title="Matsumoto sarin attack">release sarin gas</a> in <a href="https://en.wikipedia.org/wiki/Matsumoto,_Nagano" id="mw9w" rel="mw:WikiLink" title="Matsumoto, Nagano">Matsumoto</a>, Japan. Seven people are killed, 660 injured.