Throwing snowballs is a classic wintertime activity for kids, but Milwaukee police say it may have led to violence this past weekend. Two children were shot by a motorist Saturday after the driver's car was hit by a snowball, police tweeted Monday morning.

The Milwaukee Police Department said officers responded to a shooting in the city on Saturday evening. They found a 12-year-old girl and a 13-year-old boy at the scene, each suffering from a "non-life threatening" gunshot wound.

Based on their preliminary investigation, police believe both of the victims were part of a larger group of minors tossing snowballs at passing vehicles. After one of the snowballs hit a white Toyota, the driver allegedly fired shots at the group of kids — and hit the two victims.

On Saturday, January 4, 2020, at approximately 7:50 p.m., the Milwaukee Police Department responded to a shooting on the 6100 Block of West Birch St. Upon arrival officers found a 12 year old Milwaukee female suffering from a non-life threatening gunshot wound. — Milwaukee Police (@MilwaukeePolice) January 6, 2020

Both children were given first aid by authorities at the scene and then taken to a local hospital for treatment.

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Authorities implored the public to provide any information they may have regarding the incident. The Milwaukee Police Department has not yet responded to CBS News' request for additional information.