Officials say two helicopter pilots were killed in a crash while battling a wildfire at Yosemite National Park in California.

Federal investigators are looking into what caused the helicopter to go down near Mariposa.

A helicopter battling the Dome Fire in Yosemite National Park has crashed, killing two people. According to the Federal Aviation Administration, the Eurocopter AS332L1 crashed at 2:55 p.m. Sunday, ...

By Andrew Hay Sept 21 (Reuters) - Two pilots died when their helicopter crashed on Sunday afternoon while dropping water on a wildfire in California's Yosemite National Park, authorities said on ...

Two members of a helicopter crew battling the Dome Fire in Yosemite National Park were killed in a crash on Sunday, the U.S Forest Service said.

CALIFORNIA, USA — Two helicopter pilots were killed when their aircraft crashed Sunday afternoon while conducting water drops on a wildfire at Yosemite National Park, officials say.

Two people died when a helicopter crashed while conducting water-bucket drops to fight a wildfire in Yosemite National Park in California.

The crew members, under contract with the U.S. Forest Service, were in a helicopter that crashed on Sunday while fighting a ...

A firefighting helicopter crashed on the Dome Fire, killing two pilots as the Yosemite-area wildfire continued to expand.

A helicopter helping to battle the Dome Fire has crashed in Yosemite National Park with two people on board, according to the Federal Aviation Administration. The Eurocopter AS32 helicopter reportedly ...

Two people aboard a helicopter fighting a wildfire in Yosemite National Park were killed in a crash Sunday, authorities said.