Officer Kozminski responded to a call of a man with a gun threatening to shoot others at the location. He was shot, when shortly after arriving at the location, he went to the rear of the residence to establish a perimeter. Unknown to the officer , the suspect was lying in wait in the garage, at the rear of the residence. From that location, the suspect ambushed Officer Kozminski, shooting him in the head with a shotgun round, through the glass of the closed garage door. Another officer fired one shot, but did not his the suspect. Other officers were able to reach Officer Kozminski and carried him to a police cruiser. He was taken to Spectrum Health Butterworth Hospital where he died from his wounds.

The suspect was taken into custody and charged with murder.

Officer Kozminski had served with the Grand Rapids Police Department for seven years. He is survived by a three-year-old daughter, parents, and six siblings.

The thoughts and prayers of Michigan's survivors are with Officer Kozminski's family and friends and his coworkers at the Grand Rapids Police Department. Officer Kozminski is the first Michigan Officer to die in the line of duty this year and the 535th overall in Michigan.