PAWNEE COUNTY, Oklahoma - Oklahoma Highway Patrol reports an ATV wreck that killed one person and critically injured another at Keystone Lake Saturday.

Troopers say the crash took place around 5:30 p.m. at Keystone Lake in Pawnee County.

Ty Daniel Gant of Sand Springs lost control of his 1998 Yamaha ATV while driving on Monkey Island. The 29-year-old Sand Springs man and his passenger were thrown from the vehicle, a collision report states.

Passenger Denise Ashley Zawaski, a 27-year-old Sand Springs resident, died of head and other injuries. Gant was taken to a Tulsa hospital in critical condition with head and other injuries.

Gant's condition before the crash and the cause of the fatality wreck are under investigation, the report states.