If the phone rings and the caller says he represents the IRS, be suspicious.
That's the warning from federal authorities, who on Thursday said a nationwide phone scam has stolen $1 million from thousands of unsuspecting people.
The impostor claims to be an Internal Revenue Service representative and tells "intended victims they owe taxes and must pay using a pre-paid debit card or wire transfer," an IRS inspector general office said.
The IRS said people who receive such calls or other suspicious requests should contact the IRS.
Tax-related phone scams are among the "dirty dozen" fraud techniques the IRS warned about earlier this tax season. It also warned of phishing emails, preparer fraud and claims a preparer can offer "free money."