At least 16 people were injured in a blast targeting a bus near Egypt's Giza pyramids Sunday, security sources said.
Officials said the bus was carrying 25 people - most of them South African tourists. Videos circulating online show the bus windows blown out or shattered.
There was no immediate claim of responsibility for the blast.
The explosion took place near the under-construction Grand Egyptian Museum near the Giza pyramids. A statement issued by the antiquities ministry said that the explosion caused no damage to the museum.
In December, three Vietnamese tourists and one Egyptian guide were killed when a bomb hit their bus near the Giza pyramids.