Turkish authorities have pledged to fully investigate the cause of a jeep safari crash which killed two British holidaymakers.

The Turkish Ministry of Tourism and Culture confirmed the deaths of Alison Conroy and Valerie Olton, in Seydikemer in Fethiye province on Sunday.

Michael Dennis was seriously injured in the same accident while Charles Belsham also sustained injuries along with the driver and two other Turkish nationals, who are undergoing treatment in local hospitals.

The Turkish tourism ministry said it “takes such accidents very seriously and is taking the necessary action to have it thoroughly investigated by the relevant authorities in Turkey”.

Reports suggest an open-top vehicle crashed into a telegraph pole as the group returned from a day trip.

It is believed the party were coming back from a trip to the Saklikent Gorge – a canyon in the mountains about 27 miles from the town of Fethiye.

The tourism body offered its condolences to the family and friends of the deceased and also sent wishes for a speedy recovery to the injured individuals.

Turkey is the world’s sixth most popular tourism destination with 37.8 million people travelling last year, of which 2.51 million travelled from the UK.

The vast majority enjoyed a safe and incident-free holiday, the tourism ministry added.