Kathmandu: Nepal's mountaineering authorities are investigating a climbing claim by an Indian couple who are accused of altering photographs of themselves on the summit of Mount Everest.

Department of Tourism chief Sudarshan Dhakal said on Monday authorities were reviewing the Everest climb made by Dinesh Rathod and his wife Tarakeshwari in May.

They were issued climber's certificates from the Nepal government after they presented a photograph of themselves on the 8850-metre summit.