Reno, NV : Three people killed in rollover crash on Sunday October 18 2015

An official report has given the cause of the rollover accident involving South Lake Tahoe Officer Mark Hounsell.
According to officials, the car drifted off of the road for some reason, and the driver overreacted which caused the vehicle to overturn several times. Officers believe that all passengers were wearing their seat belts. They do not suspect that impairment was a factor.Troopers responded to the accident around 4:55 p.m. on Oct. 17.
Mark Hounsell, his wife Jeanne, and family friend Laura were pronounced dead at the scene. Two of the children were transported by Care Flight, and two by ambulance, to a local hospital with serious injuries.

Source:
South Lake Tahoe Police Officer, wife, and friend killed in rollover crash