A Fall River man was killed in an accident on the expressway on Sunday morning round 7 a.m., according to Massachusetts State Police.

Troopers responded to reports of "a motor vehicle off the roadway approximately one half mile South of Exit 15 on Route 93 Southbound in Dorchester. Upon their arrival they discovered a 1998 Mercedes sedan that, for reasons which remain under investigation, traveled over the guardrail to the right side of the roadway."

State Police report that the victim— the driver— was a 45-year-old male from Fall River. He was "located outside of the vehicle unconscious with serious injuries. No other vehicles were involved in the crash."

The crash is under investigation.