Two high-rise buildings have collapsed in the centre of Rio de Janeiro - 5 people have died and at least 19 are still missing. Emergency teams are working to find survivors in the rubble. Eyewitnesses spoke of a strong smell of gas and an explosion just before the buildings collapsed.<br /><br />RT on Facebook: http://www.facebook.com/RTnews <br />RT on Twitter: http://twitter.com/RT_com
