MARSHALL CO., OK -- The Oklahoma Highway Patrol is continuing their investigation into an accident that killed three people Tuesday.
OHP says a team mapped the crash site on Highway 70 earlier Wednesday and they are doing a post collision inspection of vehicles making sure there were no defects.
They also say blood tests have been ordered for the drivers, which is standard procedure.
The accident killed an Oklahoma City father and two of his children Tuesday and left his other child injured.
OHP says the results from the blood tests should be back in three or four months.