BOSTON (AP) — The ninth-season winner of the reality TV show “Big Brother” told a federal agent that he used his $500,000 prize to buy thousands of oxycodone pills and resell them, authorities said.

Adam Jasinski, 31, of Delray Beach, Fla., has been charged with attempting to sell 2,000 pills in Massachusetts to a government witness.

Federal prosecutors said Jasinski was arrested Saturday after he flew to Boston and showed the witness a sock containing two plastic bags filled with oxycodone, a powerful painkiller that is a popular street drug because of its euphoric effects.