OILDALE, Calif. — The California Highway Patrol released additional information surrounding a major injury crash that involved four vehicles in Oildale on Monday.

According to the CHP, 29-year-old Ruben A. Arvizu Singh and 35-year-old Mark Richard Schrader were traveling northbound on Chester Avenue south of Roberts Lane "at a suspected high rate of speed." Singh made an "unsafe lane change" and collided with Schrader's 2011 Mazda.

Singh's 2012 Nissan spun out of control and collided with a 2003 Honda driven by 82-year-old Clinton Henry, which was stopped in the turn lane on North Chester Ave just south of Roberts Lane. Singh's car then jumped the center divider and struck a Chevy Silverado driven by 59-year-old Jody Lane Jackson who was traveling southbound.

The force of that impact caused the engine of Singh's car to be thrown into a McDonald's parking lot, striking another vehicle.

Singh suffered major injuries and was transported to Kern Medical Hospital. Schrader and Jackson suffered minor injuries. Jackson was also transported to Kern Medical Hospital.

This incident remains under investigation. At this time it is unknown if alcohol or drugs played a factor in the crash.