A deadly collision between two passenger trains in Egypt was caused by a water buffalo which had wandered onto the track, officials said, according to Sky News.

Eighteen people were killed and 39 others were wounded in the crash which happened south-west of the capital Cairo.

The accident began after the first train struck the animal and then stopped.

The service was then hit from the back by a second train which was travelling at full speed.

The official death toll has been lowered from one which originally said 25 people were killed and 55 injured, according to Sky News.

No foreigners were reported among the casualties after the accident in the al Ayyat area of Giza, 25 miles from the capital.

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