MADISON, Wis. -

It's early in the tax season, but state officials say complaints about fraudulent filings are running high.

The state Department of Agriculture, Trade and Consumer Protection said more people are complaining that when they go to file a return, someone has already filed in their name. It's an attempt to steal someone else's refund.

Officials didn't provide numbers on complaints. But they said they've already led to one state lawsuit against a Milwaukee tax service owner who violated state consumer protection laws.

Officials said citizens should report any evidence of fraudulent filing immediately.