Waterloo Regional Police seized two tow trucks that they say were being driven in an aggressive manner and were parked too close to the scene of a collision.
That collision, police say, involved three vehicles at Fischer-Hallman Road and Glasgow Street in Kitchener at around 5 p.m.
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Police say a complaint was received about two unmarked tow trucks driving on curbs and sidewalks to reach the scene to solicit business.
A third unmarked tow truck arrived at the scene shortly thereafter.
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After investigating, police say that officers from the traffic services unit charged all three drivers with positioning a tow truck within 200 metres of a collision.
The two drivers were also charged with careless driving and their trucks seized, police say.