THIS JUST IN!
John Mark Karr says he killed Steve Irwin!
Says he met him in a seafood restaurant and accidentally stabbed him with a swordfish. Report does not jibe with eyewitness accounts of stingray attack; police also say he was in jail at the time.
New York tabloids plan to run with cover story about Karr's confession tomorrow.
Claims to have photographic evidence of his accomplices: