123 Kolkata: The search and rescue operation for Ranaghat climber Subrata Ghosh, who summitted Mount Everest and then went missing while descending from the mountain, is likely to begin on Sunday. The Sherpa, Palchen Tamang — who accompanied Ghosh during the climb — came down to the base camp on Saturday morning."We have heard that the Bengal govt has taken an initiative for the search and rescue operation. The process takes time as the team needs at least six Sherpas. Since this is a long operation, Sherpas will need to carry a lot of stuff, including tents, food, and oxygen cylinders. We hope it will start by next week," said Bodhraj Bhandari, managing director of Snowy Horizon Treks in Kathmandu.Bhandari said Tamang reached Camp IV after spending the entire night in the death zone. While Bhandari could speak to the Sherpa briefly, he said the latter exhausted his oxygen and climbed down without any supplementary oxygen support. The Sherpa had also suffered frostbite.S Arun Prasad, district magistrate of Nadia, said they had informed the state govt and urged it to take up the search operation.According to sources, Ghosh started for the summit around 10pm on Wednesday and reached the summit after 16 hours, between 2pm and 3pm on Thursday. His oxygen reserve was almost exhausted by that time, and the weather turned windy.Sarajit Ghosh, brother of Subrata Ghosh, said his brother was in love with the hills. "When mother told him to marry, he always avoided it. Instead, he used to say that mountain climbing was everything to him. He was very sincere about physical exercises and discipline. While all others would take dinner late, he used to have it by 8pm. He never missed his exercise regime."