All four people aboard a helicopter were killed when it crashed Sunday in a remote area of Northern California, the Colusa County Sheriff's Department said.
The Robinson R66 crashed around 1:15 p.m. in Colusa County, 65 mile northwest of Sacramento, the Federal Aviation Administration said in a statement.
It was first reported by a Cal Fire engine driving through the area, FOX 40 reports.
Deputies and Sacramento River Fire personnel reportedly found the four passengers still inside the helicopter after it crashed, and declared them all dead at the scene, according to KCRA. Their names have not yet been released.
Local authorities rushed to the scene of the crash in northern California Sunday afternoon and declared all four passengers dead at the scene
Wreckage from the helicopter crash could be seen from miles away Sunday night
The helicopter was reportedly a Robinson R66, like the one seen here
Walt Seaver, who owns the tomato farm where the helicopter crashed on Sunday, said he didn't see any smoke as the helicopter came down.
What appeared to be debris could be seen from miles away, according to KCRA.
The cause of the crash is currently unknown, and the FAA and the National Transportation Safety Board will investigate the crash.
They are expected to provide an update on the situation Monday morning.
Walt Seaver said the crash happened at his tomato field, but he did not see any smoke from the helicopter as it came crashing down
'Once on scene, investigators will begin the process of documenting the scene and examining the aircraft,' Jennifer Gabris, a spokeswoman for the NTSB told CNN.
'Part of the investigation will be to request radar data, weather information, air traffic control communication, airplane maintenance records and the pilot's medical records,' she added, noting that the investigators will also 'look at the human, machine and environment as the outline of the investigation.'
A preliminary report will be available after 15 days, she said, and the full investigation will take one to two years to complete.
In the meantime, the Colusa County Sheriff's Office is interviewing people who may have seen the helicopter crash and are asking anyone with any information to contact them.