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Aan elevated view of al-Attaba district on the edge of downtown Cairo, Egypt. [Mohamed El Shahed, AFP]

At least 18 people, many of them children aged 13 to 14, were killed on Tuesday in northern Egypt when two pick-up trucks carrying agricultural day labourers crashed, a local medical source told AFP.

Egypt's health ministry had earlier said there were 47 casualties, including some 30 injured in the crash in the Dawawis area of Ismailia governorate.

Dangerously overcrowded pick-ups are a regular mode of transport for millions of Egyptian informal workers, despite the danger, including to child labourers.