HATTIESBURG, Miss. -- Indianapolis Colts owner Jim Irsay posted on his Twitter account that he was in Brett Favre's hometown, but the quarterback's agent says he has not heard of any interest from the team.

The Colts owner might have just been taking his Twitter followers for a ride. The team said Monday it was "99.5 percent" sure that Irsay was not in Hattiesburg on Sunday.

The 41-year-old Favre retired in the offseason after a 20-year career and lives in Hattiesburg, but Irsay appears to be sniffing around because Peyton Manning had neck surgery in May and hasn't played in the preseason, casting doubt on his availability for the start of the season. Manning has played in 227 consecutive games.

"Brad, I'm in Hattiesburg ... is it right or left at the Firechief?" Irsay tweeted Sunday, presumably referring to former Minnesota Vikings coach Brad Childress, who traveled to Mississippi last July when he tried to convince Favre to return for the 2010 season.