Anti-California stickers popping up in Oregon

LOS ANGELES (KABC) -- Stickers on home-for-sale signs all over Portland, Oregon are popping up with an anti-California message.

The cost of homes in the Portland area has been on the rise, and some people think it has to do with Californians.

The stickers show a silhouette of the state with a red slash through it. Realtors said Oregonians are being outbid by out-of-state buyers, which includes Californians.

It's not clear who may be behind the stickers.