A pair of Turlock siblings were killed Sunday in a single vehicle collision in Jamestown.

The California Highway Patrol identified the deceased as Hope Giron, 59, of Turlock and her brother, Hector Giron, 55, of Turlock.

The pair were in a 2002 convertible Ford Mustang, driven by Hope Giron. They were traveling eastbound on State Route 120 in Jamestown when the collision occurred.

The CHP stated Hope Giron was just west of Rushing Hill Road, also known as The Rock Shop, when she lost control of the Ford. The surface of the road was wet, though it was not raining at the time, and the CHP investigation determined the speed of the Mustang was too high for the wet conditions.

The Ford Mustang veered off the north road edge and into the center median, before rolling off the roadway. The CHP report stated the Mustang continued to roll down until striking an outcropping of rocks and a tree.

The Mustang came to a stop on the convertible roof, causing the fatal injuries to the brother and sister. There were no other passengers in the car.

Hector Giron was wearing a seat belt, while Hope Giron was not, according to the CHP.