AP PHOTOS: Terror, death, devastation in Lebanon explosion

As they watched a huge mushroom cloud rise over the seaport capital, many who felt the massive explosion in Beirut on Tuesday thought it was a nuclear detonation. Others described the popping and bursting of fireworks and a raging fire that spread to another building, triggering the blast felt kilometers (miles) away. The explosion collapsed balconies, shattered windows and ripped bricks from buildings, killing more than 70 people and injuring more than 3,000.
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