The jersey and a second one Brady wore in a championship victory two years earlier were taken by a former Mexican media executive who had been credentialed to cover the February game in Houston, according to the National Football League and law enforcement officials.
Mexican authorities found the missing jersey at the home of Martin Mauricio Ortega, a former director of Mexico's La Prensa newspaper, in a raid following a Federal Bureau of Investigation request, a government source told Reuters.
Ortega has not been arrested because he has not yet been charged, the source added, but the investigation is ongoing.
Ortega could not be reached for comment on Monday.
The Houston Police Department and league security were involved in the investigation, along with the FBI.
"You don't come to Texas and embarrass us here on our own turf," Houston Police Chief Art Acevedo told reporters on Monday. He said the case, while not a major crime, had been investigated because "the only blemish that we had from the Super Bowl was these jerseys that were stolen from the locker room."
La Prensa said in a statement it had been informed that Ortega had been involved in the theft.
Read the full article on eurosport.co.uk: Tom Brady's missing Super Bowl jersey found in Mexico