Waterloo police are still trying to figure out exactly what happened early Sunday morning in Waterloo that led to the death of 25-year-old Micalla Rettinger. The former UNI softball player, who was driving home from a weekend job at Mulligan's in Cedar Falls at approximately 2:30 Sunday morning, was shot and killed after a bullet came through the window of the SUV she was driving.

Micalla Rettinger / Courtesy: UNI Sports Information

Micalla's boyfriend, Adam Kimball, also employed by Mulligan's was in the vehicle with her, along with a friend, and Adam and Micalla's dog "King" when the shooting occurred. Kimball was struck above the mouth by the same bullet that struck Rettinger. He posted a loving tribute to Micalla early this morning that read in part, "I will forever be thankful for the time I was fortunate enough to spend with her, and forever wish it never came to an end." The full post is below.

In this heart-wrenching video from NBC's Today Show, Kimball remembers what happened inside the vehicle and Micalla's dad reflects on his daughter and the last time he saw her.

Waterloo police continue to ask for the public's help in this case. Police released a statement that said,

We are still seeking the public's help in locating anyone who may have been in the area (of) Highway 218 between Cedar Falls and Waterloo on April 28, 2019, around 2:30 a.m. This includes both vehicle and foot traffic on or off the roadway along with anyone participating in any outdoor activities in this area. We continue to follow up all leads submitted by the community and are reviewing a multitude of surveillance and traffic cameras from the area.

Anyone with information should call the Waterloo Police Investigations Division at 291-4340, extension 7. You may also call Cedar Valley Crime Stoppers at 855-300-8477. The reward for information about the shooting continues to increase. As of Thursday morning, the amount had ballooned to $58,000.

Rettinger was a dental assistant at Kimball and Beecher Family Dentistry who hoped to become a dentist. Our hearts go out to her family, boyfriend, and the other person in the vehicle, who has not been identified.