Foreign Office (FO) travel advice to UK holidaymakers visiting Egypt has changed but travel to the popular Sharm el Sheikh resort areas is still being allowed.
The FO is now advising against all but essential travel to South Sinai in Egypt except for within the Sharm el Sheikh resort areas.
The change follows Sunday's attack on a tourist bus in Taba in South Sinai. Four people were reported killed.
FO advice for other areas of Egypt remains the same, including advice against visiting the Governorate of North Sinai.
The FO said: "This advice means that we are now advising against all but essential travel to the Governorates of Beni Suef, Minya, Asyut and Sohag and the Governorate of South Sinai, with the exception of the area within the Sharm el Sheikh perimeter barrier - which includes the airport and the areas of Sharm el Maya, Hadaba, Naama Bay, Sharks Bay and Nabq.
We also continue to advice against all travel to the Govenorate of North Sinai."
The FO continued: "We believe there is a high threat from terrorism and terrorists continue to plan attacks. Attacks could be indiscriminate and occur without prior warning. Terrorists could target protesters and the Egyptian authorities.
The FO went on: "Enhanced security measures are in place to protect the Sharm el Sheikh resort areas. Egyptian military are situated in Sharm el Sheikh international airport, at check points around the perimeter of Sharm el Sheikh and throughout the South Sinai Governorate.
"Routine security checks are being performed on entry into the airport and the police are carrying out vehicle checks in Sharm el Sheikh. There were no violent protests in the South Sinai resorts during recent disturbances in Egypt."