According to CNN and The Himalayan Times, Jonathan Sugarman, 69, was at Camp II on Monday when he began feeling ill.
According to CNN and NBC News, the US Embassy in Nepal confirmed Sugarman's death in a statement.
"Our deepest sympathies go out to his family and friends," the Embassy said, according to reports. "The Embassy is in contact with Dr. Sugarman's family and local authorities."
In a statement issued Monday, International Mountain Guides (IMG) CEO Eric Simonson confirmed the man's death but did not identify the victim.
"We can confirm that this event was not the result of a climbing accident or route condition that would be of potential impact or safety concern to any other teams on the mountain," Simonson stated.
The rest of the climbing team is "doing about as well as can be expected given the circumstances," he says.
According to reports, efforts are already underway to remove the victim's body from the mountain.
According to reports, this was not Sugarman's first attempt at scaling Mount Everest.
According to The Himalayan Times, the Seattle-based Harvard University graduate abandoned a separate attempt at Camp III in 2022.