TULSA, Oklahoma - The United States Postal Inspector has a warning for businesses in Tulsa. Someone has been going around stealing mail from them.

Tulsa Police say criminals are targeting unsecured mailboxes in businesses complexes.

Financial Crimes Detective, Matthias Wicks, said, "It's nothing new, we've investigated these cases before but it's starting back up again."

The U.S. Postal Service urges you to check your mail right after it's delivered and to only mail your bills at a post office box or building or give it directly to your letter carrier.