Hundreds of foreign nationals are waiting anxiously for news about loved ones believed to be caught in a deadly flash flood and mudslide near the border between Nepal and Tibet. Among them are Shreya and Ashna Ahuja, sisters from Texas, who are hoping for updates about their parents, Deepak and Madhu Ahuja, who had traveled to Mount Kailash on a group pilgrimage. The sisters spoke to their parents just before the disaster struck. Similarly, Radhika Sharma, a New Yorker, is waiting to hear from her parents, Ramesh and Neelam Sharma, who were also on the same pilgrimage. Their last known contact was at 8 a.m., about an hour before the floods hit. Sharma is hoping her parents reached the Tibetan side of the border. According to Nepali authorities, more than 575 people have died, and nearly 2,000 are missing, including tourists from the U.S., Australia, Canada, India, and the U.K. The U.S. State Department reported that about 90 American citizens may have been affected by the floods, with five confirmed to have reached safety. At least 77 of those caught in the disaster were part of a pilgrimage organized by the Isha Foundation, a non-profit based in India with a branch in Tennessee. Leslie Crespi, a liaison for the foundation, said the group was working on immigration paperwork in a building meant to be earthquake-resistant when the flood hit. Prabhath Sajeepa, a U.S. citizen who went missing, was among the 77 people traveling with the group. His niece, Kavya Koulagi Jayatheertha, said they are hoping for news soon. The U.S. Embassy in Nepal is working with local tour agencies and authorities to assist affected Americans, though officials have not provided specific details for privacy reasons. President Donald Trump said his administration had offered assistance to Nepal, stating, "We are sending aid and we've spoken to the leadership. And we let them know anything they want, we'll have." In Canada, the foreign office reported that 32 Canadian citizens and permanent residents in Nepal and Tibet had unconfirmed whereabouts. The number may change as more information becomes available. Canadian officials, including Secretary of State for International Development Randeep Sarai, are urging families to use the Registration of Canadians Abroad service to stay in touch with the government during emergencies. Nepal police reported that more than 500 tourists are missing from 28 countries, most of whom are foreign nationals. The Nepal Tourism Board has provided a breakdown of the missing by nationality. Chinese state media reported three deaths and at least 558 missing in Tibet, including 260 foreign nationals. However, it is unclear whether these figures overlap with the numbers given by Nepal. Initial reports suggested an earthquake might have triggered the disaster, but the U.S. Geological Survey later said the seismic activity was likely caused by the landslide itself. Landslides can be triggered by various factors, including water from rainfall or melting ice. Scientists note that climate change is accelerating glacier melt in the region, but it is too early to determine its role in this specific event. The floods have devastated communities, with roads and bridges worth over 15 billion Nepalese rupees (about $98 million) damaged. Nepal's President Ram Chandra Paudel has called on all sectors of society to intensify rescue and relief efforts. He urged people to remain vigilant and cooperate in the affected areas, emphasizing the need for unity and coordination in the face of the crisis.