A statement from the Celtics:
The organization has received numerous reports of counterfeit playoff tickets being sold to consumers in the Boston area. Fans are urged to be aware of such illegal activity and avoid purchasing tickets through any unauthorized seller of Boston Celtics tickets. The only tickets whose authenticity can be guaranteed are those purchased through Celtics.com, Ticketmaster.com, over the phone at 800-4-NBA-TIX, in person at the TD Banknorth Box Office, any Ticketmaster outlet or on Ticketmaster’s “TicketExchange” online. Tickets purchased or acquired through other means or locations cannot be validated and may be counterfeit. Patrons attempting to use fraudulent tickets to enter the building will be evicted and may be subject to arrest.