WATERLOO, Iowa - Investigators are working to determine who fatally shot a woman while she was driving in April.
No arrests have been made yet in the April 28 death of Micalla Rettinger, a former softball player at the University of Northern Iowa who was driving home from work at a bar with two passengers when the shooting happened.
Rettinger died and one passenger was hurt in the shooting that happened in a remote area between Waterloo and Cedar Falls on Highway 218.
Police Maj. Joe Leibold tells the Waterloo-Cedar Falls Courier the bullet and other evidence was recently sent to a Bureau of Alcohol, Tobacco and Firearms lab for additional testing.
Rettinger was from Lenexa, Kansas. She had been living in Waterloo since graduating in 2016 from college.