A damaged bus is seen at the site of a blast near a new museum being built close to the Giza pyramids in Cairo
At least 17 people have been injured in a blast targeting a tourist bus in Egypt.
The roadside bomb attack happened near the new Egyptian museum close to the Giza pyramids on the outskirts of Cairo.
Most of those hurt were foreign tourists, it has been reported. No one is believed to have been killed.
The wounded have been taken to hospital nearby.
A witness, Mohamed el Mandouh, said he heard a "very loud explosion" while sitting in traffic near the site of the blast.
Pictures posted on social media showed a bus with some of its windows blown out or shattered, and debris in the road.
A spokesman for Meryland Tours, which was renting the bus from Dominant Travels, said the injuries were not serious and believes there were no Britons on board.
Officials have told the Associated Press there were 25 people on board, mostly from South Africa.
The explosion damaged a windshield of another car. There are reports that four Egyptians who were in the car were injured by broken glass.
In December, three Vietnamese tourists and an Egyptian guide were killed and at least 10 others injured when a roadside bomb hit their tour bus less around two miles from the pyramids.
The latest attack comes as Egypt's vital tourism industry was showing signs of recovery after languishing for years because of the political turmoil and violence that followed a 2011 uprising that toppled former leader Hosni Mubarak.
The Grand Egyptian Museum is due to open next year as the home for some of the country's top antiquities, next to the site of the pyramids.
There was no damage to the museum from the blast, which happened about 50m away from the outer fence and more than 400m from the building itself.