Police came to the saddest conclusion about a crash that killed a mom and her three kids

Twitter/@ScallywagNYC

More than a year after an SUV with a mom and her three kids inside plunged 50 feet off of a cliff into Lucky Peak Lake in Idaho, authorities have determined that the fatal wreck was intentional.

Videos by Rare

RELATED: Texting killed a teen in this fatal crash — her last messages will leave you speechless

The Ada County Coroner’s Office has ruled the deaths triple homicide-suicide.

On June 2, 2016, 40-year-old Noel Bankhead drove her Land Rover off of a cliff, killing herself, her daughters Anika Voermans, Gwyneth Voermans, 8, and her son Logan Voermans, 11.

The impact of the crash, as a chilling photo shows, crushed the roof of the vehicle. Witness accounts and an analysis of the road led authorities to their conclusion.

FILE – This June 2, 2016 file photo photo provided by the Ada County Sheriff’s Office, deputies and the Boise Fire Department dive team stand by the wreckage of an SUV driven by a 40-year-old Boise woman that plunged off a cliff into the Lucky Peak Reservoir in Boise, Idaho. Authorities said Friday, Oct. 27, 2017 that Noel Bankhead deliberately drove her sport-utility vehicle off a cliff and into a reservoir in a crash that killed her and her three young children. The Ada County Coroner’s Office ruled the deaths that occurred a triple homicide-suicide. (Patrick Orr/Ada County Sheriff’s Office via AP, File)

Authorities said that witnesses told investigators that Bankhead was driving on a state highway when she turned off and positioned the car toward the cliff, then suddenly accelerated.

Officials said they found nothing mechanically wrong with the vehicle.

RELATED: A woman in a pickup truck drove the wrong way on I-95 and caused a horrific fatal crash

The Ada County Sheriff’s Office cited witness statements and lack of skid marks in making its determination that Bankhead acted deliberately. Toxicology tests found no medication or alcohol in Bankhead’s system.

“Witnesses later told investigators Noel Bankhead was driving her Land Rover northbound on Idaho 21, slowed down, turned on to Spring Shores Road, and positioned the car towards the cliff and suddenly accelerated,” a Friday press release said, according to the Idaho Statesman.

The official cause of the deaths was drowning associated with blunt force trauma.

Bankhead and her husband divorced three years ago.

The Associated Press contributed to this report.

What do you think?

Casey Anthony’s parents say she’s got another thing coming if she does a reality TV show

Duchess Kate reveals her Halloween plans, and they don’t involve trick-or-treating with her kids