World-renowned climber Nirmal Purja, who starred in a hit Netflix documentary, has gone missing after an avalanche on one of the highest peaks in the world. Purja was scaling Pakistan’s 26,400-foot-tall Broad Peak with 10 other climbers on Thursday when an avalanche hit, CNN reports. In a statement, the Alpine Club of Pakistan said it “has received deeply concerning reports of an avalanche that struck a team of climbers on Broad Peak.” The expedition team reportedly included climbers from Pakistan, Oman, China and the U.S. “The entire team has reportedly been out of communication since the avalanche,” the Alpine Club’s statement said. The Alpine Club said it was working with the authorities to launch an immediate search-and-rescue operation, with helicopter support and other available resources being prepared.