OAKVILLE, Ont. - Three Oakville teens are facing mischief charges after police say graffiti was spray-painted on numerous buildings in the town southwest of Toronto over the weekend.

Halton regional police say a passerby noticed three people "tagging" a building (in the area of Trafalgar Road and Church Street) early Sunday and reported the incident.

It's alleged the suspects -- who used various unique tags or signatures -- also spray-painted graffiti on other properties in the area.

A 17-year-old and two 16-year-olds have each been charged with six counts of mischief under $5,000.

Their identities are protected under provisions of the Youth Criminal Justice Act.