Frantic Search for Survivors of Beirut Explosion

Rescue workers in Lebanon are searching for more than a hundred people who are missing after a huge explosion devastated the port area of the capital Beirut on Tuesday.

The blast killed at least 100 people and injured more than 4,000 others.

The whole city was shaken by the explosion and a mushroom cloud could be seen spreading over the port area.

President Michel Aoun said the blast was caused by 2,750 tonnes of ammonium nitrate stored unsafely in a warehouse.

Ammonium nitrate is used as a fertilizer in agriculture and as an explosive.

President Aoun declared three days of mourning which started on Wednesday. Opening an emergency cabinet meeting, he said: "No words can describe the horror that has hit Beirut last night, turning it into a disaster-stricken city".

"Amid last night's smoke, flames and destruction, I would like to laud the zeal of the Lebanese who rushed to the blast location and perimeter and the hospitals to offer support and assistance," he added.