Explosion targets foreign tourist bus near the Pyramids in Egypt (Photos)

Big explosion has targeted a tourist bus near the Egyptian museum in Giza, close to the great Pyramids in Egypt on Sunday.
At least 12 people were injured in the blast, mostly foreign tourists, Reuters reported, citing military sources.
Pictures showing a damaged bus and what look to be injured tourists, some covered in blood, have been circulated on social media.

No group has claimed responsibility for the attack yet.