An off-duty Los Angeles County Sheriff’s Department deputy was killed in a head-on collision on San Francisquito Canyon Road near Stator Lane Wednesday night.

At approximately 9:40 p.m. Wednesday, the sheriff’s deputy, a 31-year-old resident of Lancaster, was traveling southbound on San Francisquito Canyon Road, approaching Stator Lane, according to CHP officials.

For an unknown reason, the sheriff’s deputy lost control of his vehicle, partially crossed over the double yellow lines into the northbound traffic lane, and collided with a vehicle driven by Katelyn Sanders, 20, of Green Valley.

As a result of the traffic collision, both parties suffered major injuries and were transported to Henry Mayo Newhall Hospital.

While at Henry Mayo, the sheriff’s deputy succumbed to his injuries and was pronounced deceased at 11:08 p.m.

Alcohol or drugs are not suspected to be a factor in this traffic collision.

The sheriff’s deputy’s name is being withheld pending notification of next of kin, said Los Angeles County Coroner’s office officials.