Denison Police identified the occupants of the vehicle that left U.S. Highway 75 and crashed Wednesday night, causing the death of the driver and injuring the passenger.

Police Lt. Mike Eppler said the driver was 73-year-old Corrine Chelf, and the passenger was 54-year-old Vickie Pratt. The two were mother and daughter, and both lived in Pottsboro, he said. Mrs. Chelf was transported to the Texoma Medical Center where she was pronounced dead that night. Pratt was also transported to the hospital and later transferred.

“Sometime during the night she was taken to a Dallas hospital for further treatment,” Eppler said. “She’s in intensive care.”

Mrs. Chelf was driving a 1997 Chevrolet pickup northbound on Highway 75, and the vehicle veered off the roadway just south of Spur 503. The pickup drove through the median and entered a creek beneath the roadway. Denison Police received a call about the wreck at about 6:53 p.m.

“We still don’t know why she left the road; we don’t know,” Eppler said Thursday.

Northbound lanes of Highway 75 were closed for about 45 minutes while crews cleared the scene, then one lane was reopened.

Herald Democrat Reporter Michael Hutchins contributed to this story.