BBCBreaking: Build-up of gas caused blast which killed 37 at HQ of oil company #Pemex in #Mexico City, country's attorney-general says

BBCBreaking: Build-up of gas caused blast which killed 37 at HQ of oil company #Pemex in #Mexico City, country's attorney-general says



via Twitter / BBCBreaking http://twitter.com/BBCBreaking/statuses/298629495559163904