A <a class="mw-redirect" href="https://en.wikipedia.org/wiki/2017_St._Petersburg_Metro_bombing" id="mwAVE" rel="mw:WikiLink" title="2017 St. Petersburg Metro bombing">bomb explodes</a> in the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/St_Petersburg" id="mwAVI" rel="mw:WikiLink" title="St Petersburg">St Petersburg</a> metro system, killing 14 and injuring several more people.