A roadside bomb hit a tourist bus on Sunday near the Giza Pyramids, wounding at least 16 people including tourists, Egyptian officials said.
The officials said the bus was travelling on a road close to the under-construction Grand Egyptian Museum, which is located adjacent to the Giza Pyramids but is not yet open to tourists.
The bus was carrying at least 25 people mostly from South Africa, officials added.
Security forces cordoned off the site of the explosion and the wounded were taken to a nearby hospital, they said.
They said the explosion damaged a windshield of another car. Footage circulated online shows shattered windows of the bus.
The officials spoke on condition of anonymity because they weren't authorized to brief media.
In December, a bus carrying 15 Vietnamese tourists was hit by a roadside bomb, killing at least three of them.