A 25-year-old Iowa woman was killed and a 32-year-old man wounded when they were both hit by the same bullet in an apparent random shooting as they were driving home from work early Sunday morning.

Police in Waterloo, Iowa, and a local crime-stopping unit are offering a $7,000 reward for the person responsible for killing Micalla “KK” Rettinger and wounding her friend, Adam Kimball.

Rettinger was shot in her neck through the driver's seat window, and the bullet then hit Kimball, according to NBC affiliate KWWL in Waterloo. A third passenger in the car was uninjured.

Police say Rettinger and Kimball were returning home from work when they were shot at around 2:30am. Rettinger's father told The Des Moines Register that his daughter was likely driving her boyfriend home after an evening shift at a bar.

After being shot, Rettinger managed to drive the car to a highway exit, where she was later pronounced dead, according to KWWL. Kimball is being treated for his injury.

"It seems so out of the ordinary and so random and senseless that I can't even get my mind around it," Rettinger's father told the Register.

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Waterloo Police Major Joe Leibold told KWWL in Waterloo that road rage was "one of the first things we looked into," but that didn't appear to be the cause of the shooting.

Traffic was light Sunday evening, and officers do not think Rettinger cut someone off.

Police also say there is no indication that Rettinger, a former University of North Iowa softball player who was studying to become a dentist, was involved in any activity that might have led to the shooting on Sunday. One possibility is that the shooter might have been hunting, legally or illegally.