Two climbers, a Swiss and an American, died on Mount Everest: they are the first victims of the season on the highest mountain in the world. Swiss Abdul Waraich, 41, climbed the summit before he ran into difficulties, said Chhang Dawa of the expedition’s organization, ‘Seven Summit Treks in Nepal’. “Abdul successfully reached the summit but started having problems during his descent,” he said. “We sent two more Sherpas with oxygen and food. Unfortunately, the Sherpas weren’t able to save him.” US citizen Puwei Liu, 55, also died in the highest mountain camp at the South Col. He had reached the stage called Hillary Step, between the South Col and the summit, but had to return due to physical problems. With the help of support team members and additional oxygen, he was taken back to the camp but died Wednesday night, organizers said.