OKLAHOMA CITY (June 29, 2009)--Two families are struggling to cope with the deaths of loved ones in a devastating chain-reaction collision in northeast Oklahoma.

The death toll from Friday's crash climbed to 10 Sunday after Frisco resident Shelby Hayes died at a Joplin, Mo., hospital.

Hayes; her husband, Randall; their 7-year-old son, Ethan, and her mother, Cynthia Olson, were driving to a funeral in Sarcoxie, Mo., when the crash occurred.

The others were pronounced dead at the scene.

Randall Hayes' mother, Wanda, says she was with Shelby Hayes when she died Sunday morning.

Wanda Hayes said she's working to get the bodies of her son and grandson back to Garland, Texas, so funeral arrangements can be made.

In Oklahoma City, Ronnie Hooks and his brothers are trying to do the same.

Hooks says his father, Oral; mother Earlene, and brothers Antonio and Dione were killed on their way to see him in St. Louis.

Ronnie Hooks says he was supposed to be ordained Sunday as an elder in the Church of God and Christ.

The crash happened when an eastbound tractor-trailer slammed into cars stopped for a previous accident on Interstate 44.

Some of the accident victims were trapped in the wreckage of their vehicles for as long as nine hours.

The Oklahoma Highway Patrol says a routine criminal investigation is under way.