Several climbers have said that the Rathods faked photos depicting them at the summit, according to local news reports.

Sudarshan Prasad Dhakal, who oversees Nepal’s tourism department, said that if the couple were found to have faked photographic evidence, their climber’s certificates would be revoked and they would be barred from climbing any mountains in Nepal for 10 years.

The police in Pune are also investigating the pair based on a complaint from mountaineering associations, the Press Trust of India reported. Surendra Shelke, one of the complainants, told the news agency that they had altered photographs of the climb. He said that there was a discrepancy in the clothing between two photos of the couple and that he believed the “photographs were taken either at a base camp or at a studio” and later “meticulously morphed or cropped.”

A senior Pune police official reached by telephone declined to comment on the matter on Tuesday.

Satyarup Siddhanta, a climber based in Bangalore, told The Hindu newspaper that the couple had altered his own photographs from his expedition.

Neither Dinesh nor Tarakeshwari Rathod could be immediately reached for comment on Tuesday.

Mohan Lamsal, the owner of Makalu Adventure, a company based in the Nepalese capital, Kathmandu, that organized the couple’s climb, said that he had asked them and the Sherpas who traveled with them whether their account was authentic and that he had been told it was. But on Thursday, after the claims of the other climbers surfaced, Mr. Lamsal said that the tourism department had asked him for digital photographs of the couple atop Everest. He said he had emailed and messaged them several times but received no response.