The Iowa State Patrol has released the name of three family members who were killed in a car-semi accident near West Union. 65-year old Terri Westfall and 18-year old Ashleigh Rensing, both of North Liberty, and 9-year old Alli Olson of Amama died in the accident. Another passenger, 15-year old Seth Olson of Amana was seriously injured and taken to a LaCrosse Hospital. The Patrol reports that the accident occured on Friday, May 28th at 2:30pm on Highway 150, north of West Union. Westfall was operating a 2010 Chevy Impala northbound, the vehicle crossed the center line, and collided head-on with a semi-trailer truck operated by 37-year old Lamothe Guito of Orlando, Florida. The accident remains under investigation.