Replying to My Dad May have just one the lottery

SO my dad got a check in the mail for 4450$ which was to cover his taxes for him supposidly winning the lottery about 1 year ago they supposedly new it was him bc he bought the winning ticket with his credit card, he supposidly won $250,000 the company was TelCo Inc. and it gave a number for an agent and everything, my dad called the police station to ask if there were any scams going aruond and they said no, so do you think its a scam or not?