Caitlyn Jenner‘s longtime buddy and supervisor, Sophia Hutchins, is lifeless following a tragic ATV accident close to Caitlyn’s house … TMZ has realized.

Sophia was pronounced lifeless Wednesday morning in Malibu, based on regulation enforcement and household sources. We’re informed Sophia was driving the ATV on the highway the place Caitlyn lives when she struck the bumper of a transferring automotive — that impression pressured the ATV over the shoulder … sending it, and Sophia, plummeting 350 ft down right into a ravine.

Our sources say the primary responders who reached Sophia, pronounced her lifeless on the scene. Two individuals within the automotive Sophia struck weren’t injured. It is unclear if Caitlyn was house on the time, or if she witnessed the deadly collision. We do know nobody else was harmed on the ATV.

We have reached out to Caitlyn, however haven’t heard again.

Sophia and Caitlyn first met in 2015, quickly after Jenner publicly introduced her transition, and Sophia would later seem in a number of episodes of the E! docuseries “I Am Cait.”

Along with their longtime friendship, Hutchins additionally labored as Jenner’s supervisor, overseeing enterprise ventures and public engagements.

Sophia was 29.