The shirt worn by Tom Brady during his epic Super Bowl performance may have been stolen from the New England Patriots locker room.
Brady's No 12 shirt vanished in the chaotic aftermath of the Patriots' stunning comeback win over the Atlanta Falcons.
NFL.com posted a locker room video of Brady informing Patriots team owner Robert Kraft that "someone stole my game jersey."
Kraft suggests that the shirt might end up on an Internet auction site. "You'd better look online," Kraft is heard to say.
On Monday Brady said: "I put it in my bag and I came out and it wasn't there any more. It's unfortunate because that's a nice piece of memorabilia. If it shows up on ebay somewhere someone let me know. I'll try to track that down.
"Those are pretty special ones to keep. What can you do? I'll take the ring and that's good enough for me."
One local television channel said a Patriots equipment manager had secured the shirt safely following Brady's record-breaking display - but it remains missing.
Brady smashed a host of Super Bowl records on Sunday, registering most passing attempts (62), most completions (43) and most passing yards (466) as New England fought back from 28-3 down in the third quarter to win in overtime.
Brady also became the first quarterback to win five Super Bowls.