The crash happened at 3:44 p.m. on Tuesday, Oct. 8, according to the coroner's office.
Matthews was pronounced dead at Lehigh Valley Hospital. on Friday, Oct. 18, Lehigh County Coroner Daniel Buglio said. The cause of death was "Complications of Blunt Force Injuries to Torso" and the manner of death is "Accident."
The Pocono Mountain Regional Police Department is investigating the crash, according to the coroner's office.
(Source)