Two Vietnamese tourists and an Egyptian guide were killed Friday when a roadside bomb blast hit their bus as it traveled near the Giza Pyramids outside Cairo, officials said.

An Interior Ministry statement said 10 other tourists from Vietnam and the Egyptian bus driver were wounded when the homemade device, which was placed beside a wall, exploded at 6:15 pm.

Armed security personnel quickly arrived on the scene and cordoned off the area for investigators.

The white tourist bus could be seen with its windows shattered and surrounded by soot-covered debris.

Prime Minister Mostafa Madbouli was planning to visit the injured tourists in hospital after discussing the incident with his ministers, a government statement said.

Egypt’s tourism industry has been struggling to recover from terrorist attacks and domestic instability that has plagued the North African country in recent years.

– with reporting by Agence France-Presse