An Astraeus Boeing 757-200 on behalf of Ghana International Airlines, registration G-STRZ performing flight G0-101 from Accra (Ghana) to London Gatwick,EN (UK) with 115 passengers, was enroute overhead Algeria, when the crew detected a hydraulics failure following an explosion like sound. The crew diverted to Algiers (Algeria), where the airplane landed safely.

A replacement Boeing 737-300 registration G-STRJ is estimated to reach London as flight G0-101A with a delay of 2:15 hours.

GIA flight's landing was 'precautionary' -GIA

Ghana International Airlines says its London-bound flight’s emergency landing early Saturday in Algeria was ‘precautionary.’
The pilot is said to have made an emergency landing after he detected a “fault in the hydraulic system of the flight,” Chief Executive Gifty Annan-Myers told Accra-based radio station JOYFM.
Passengers said they heard a loud explosion but authorities said there were no casualties.
Most of the 115 aboard were said to be in a state of shock.
The passengers awaited another aircraft to fly them to London, their final destination.
Mrs Annan-Myers said a backup flight in Italy was set to airlift the passengers to Gatwick.
The flight from (Lybia) should touch down at Gatwick by 7:30pm, the GIA boss Gifty Annan-Myers told JoyFM.