Security sources said the student was being questioned after several tourists from the bus picked him out from photographs as the man they saw standing in the road whistling a signal to hidden gunmen. Police are still hunting two men they suspect of carrying out the shooting. One is the student's brother and the other is the brother of a militant killed on 6 October when he tried to throw a bomb from a train at security troops. The underground El-Gamaa el- Islamiya (the Islamic Group) claimed responsibility.
The British, US and Australian embassies yesterday warned their nationals to stay out of militant strongholds in upper Egypt.