Nine Kennewick teens are suspected of being responsible for a rash of graffiti around Kennewick during the past four months.
The taggers spray painted "OMG" around town on numerous public and private buildings and property, said Kennewick police spokesman Mike Blatman.
Kennewick police, with help from Kennewick residents who reported the taggings, began investigating and served multiple search warrants connected to the incidents.
They identified nine boys ranging in age from 14-17 as being responsible for about 40 incidents between February and the first week of June, Blatman said.
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Damage and cleanup costs are estimated at $7,000.
The group of taggers also is being investigated for graffiti found outside of the city limits in Benton County, he said.
Prosecutors are reviewing police reports for possible charges of felony malicious mischief against the group.
Blatman said citizen involvement by providing information to police about the graffiti was essential in solving the crimes.