(BBC News) A roadside blast has killed two Vietnamese tourists and injured 12 other people on a bus near the Giza pyramids in Egypt, the Egyptian ministry of interior says.

A bomb hidden beside a wall went off as the bus carrying 14 Vietnamese tourists was passing, it adds.

Two Egyptians, including the bus driver, are among the injured, according to the ministry.

There were no immediate reports of any group saying it was behind the attack.

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