A red cloud hangs over Beirut in the wake of an explosion at the port. The source of the explosion was a major fire at a warehouse for firecrackers near the port in Beirut, the state-run National News Agency reported./Credit:	ANWAR AMRO/AFP/Getty Images

A red cloud hangs over Beirut in the wake of an explosion at the port. The source of the explosion was a major fire at a warehouse for firecrackers near the port in Beirut, the state-run National News Agency reported./Credit: ANWAR AMRO/AFP/Getty Images

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What we know about the Beirut blastcnn

A massive explosion rocked the Lebanese capital of Beirut on Tuesday evening, leaving at least at least 100 dead and 4,000 injured.