Nevada Highway Patrol is investigating a rollover crash that killed a Yerington woman on US 95 Alternate in Lyon County early Saturday morning. 

NHP says the crash happened around 4:30 a.m. near Lyon County mile marker 26.

A preliminary investigation shows that a gray 2005 Cadillac CTS sedan was traveling south on US 95 Alternate when it went off the roadway, struck a power pole, and overturned.

NHP says the driver, 20-year-old Heather Pineda was thrown from the car and died on scene. 

NHP says she wasn't wearing a seatbelt.