GREEN BAY, Wis. (CBS 58) -- The Green Bay Packers will soon kick off regular-season games and local officials are saying to use caution when buying tickets. 

The Packers and Green Bay Police say secondary sources may sell fake tickets. Police say you should buy tickets from verified places like Ticketmaster. The Packers say other resale sites offering verified tickets include StubHub and SeatGeek. 

Fans are also reminded that while original paper tickets issued by the Packers ticket office remain valid for entry, the team has eliminated PDF/“Print at Home” tickets in favor of Mobile Tickets. If fans purchase tickets on the secondary market via NFL-approved secondary marketplaces, those tickets will be forwarded electronically to be used as Mobile Tickets only.

The Packers say fans should do their research before buying tickets from unofficial sources and use a credit card so if there's a problem, the charges can be disputed. Ticket buyers should be wary of significant discounts on the price of tickets paired with stories about the owner being overseas, in the military, or involved in an accident. Other red flags include poor grammar and spelling or requests for payment by wire transfer, cashier's check, money order, or prepaid debit or gift cards. 

The team says fans should keep in mind that if the ticket pricing seems too good to be true, it probably is.