(Mobile phone video by Pete Travers, 570 News)<br />A massive explosion at a luxury hotel on Mexico's Caribbean coast has left 7 people dead and at least 15 injured. The victims are Canadian tourists and local workers. Medics say 2 injured tourists are in critical condition. The blast is believed to have been caused by a build-up of natural gas under the complex.<br />RT on Facebook: http://www.facebook.com/RTnews<br />RT on Twitter: http://twitter.com/RT_com
