WATCH: Dramatic video of explosion that rocked Beirut

Beirut: A dramatic video caught the moment a massive blast rocked a port in downtown Beirut on Tuesday, damaging buildings and blowing out windows and doors as a giant mushroom cloud rose above the capital. The blast that swept the Lebanese capital left more than 70 people dead and 3,000 injured, according to the Lebanese health minister. Miles from the scene of the blast, balconies were knocked down, ceiling collapsed and windows were shattered. Witnesses said many people were injured by flying glass and debris. The cause of the explosion was not immediately clear.