Controversial anti-marijuana billboards around the Portland area featuring a haggard looking child have all been taken down, Clear Channel Outdoor confirmed on Friday.

The eight billboards have been up for about two weeks, said Dan Dhruva, vice president of real estate and public affairs at the Portland branch of Clear Channel Outdoor.

He said Clear Channel decided to remove the billboards after complaints, because it was not clear who was behind the ads. Clear Channel has no position on Ballot

, which would legalize marijuana.

"The ads protesting marijuana are being removed because our policy is transparency of advertising campaigns and the advertisers who are sponsoring them. These ads include a misleading website that we believe needed to honestly represent the advertiser so the ads are being removed," he said in a prepared statement.

The billboards cost $875 each, which is the price for all political advertising.

about the billboards, which do not mention the measure but clearly target it. The billboards show a photo of a thin-faced girl with bruising under her eyes. Some say she looks like a meth addict, not someone suffering from the ill effects of marijuana.

The boards name

as a contact, but the website contains no phone number, address or names of members.

The contact phone number listed with Clear Channel for the billboards belongs to St. Petersburg, Fla., group called

. A spokeswoman there on Friday said they are not affiliated with the advertising and have no information about Protect Our Society.

Umatilla County Sheriff John Trumbo is the spokesman for people opposed to Measure 80 in Oregon, but he told The Oregonian that he doesn't know anyone with Protect Our Society.

The group is not registered as a political action committee with the Secretary of State's office.

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