Mary E. Younger, 73, and Gary J. Younger, 29, killed in single-vehicle collision on Interstate 35 near Marietta, Oklahoma

MARIETTA, Okla. — Two Kansas residents have died in a one-vehicle accident approximately six miles north of Marietta, Oklahoma. The Hays Daily News reports that Younger was pronounced dead at a hospital in Ardmore, Oklahoma. The Oklahoma Highway Patrol says 73-year-old Mary E. Younger was driving a car north on Interstate 35 around 2 p.m. A 29-year-old passenger, Gary J. Younger, also died from injuries sustained in the crash. Officials are investigating the cause of the accident.