Massive Explosion In Beirut (UPDATED)

A massive explosion shook Beirut, Lebanon, hours ago, killing at least 50 and injuring over 3,000.  Those numbers are expected to rise.  The explosion is believed to have taken place where nitrates were being stored on the city's waterfront.  Horrific:




UPDATE:  It's being reported that fireworks accidentally ignited several thousand tons of ammonium nitrate being stored at the waterfront.