Two climbers fell to their deaths on Saturday from the face of the towering El Capitan granite rock formation at Yosemite National Park in northern California, the U.S. National Park Service said.
The fatal fall occurred at about 8:15 a.m. (1515 GMT) while the pair were scaling the so-called Freeblast route of El Capitan, the agency said. No other details were immediately released as park rangers investigated the incident.
The Park Service said the deceased climbers' identities would be withheld until their families were notified.
El Capitan, which looms 3,000 feet (914 m) above the floor of Yosemite Valley, is one of the best-known landmarks in the national park and is considered a world-class challenge for rock climbers.
A British climber was killed and his wife was badly injured last September when a rockslide from El Capitan rained boulders onto a popular hiking trail.
More than 100 climbing accidents occur in Yosemite every year, and 51 climbers died from traumatic injuries in the park from 1970 through 1990, according to data posted online by the Park Service.