Arkansas fired football coach Bobby Petrino on Tuesday, publicly dressing him down for hiring his mistress and intentionally misleading his boss about everything from their relationship to her presence at the motorcycle accident that ultimately cost him his job.

Athletic director Jeff Long announced his decision at an evening news conference and laid out a stunning laundry list of misdeeds against the man he hired away from the Atlanta Falcons four years ago.

The 51-year-old Petrino, a married father of four, had maintained an inappropriate relationship with 25-year-old Jessica Dorrell for a "significant" amount of time and at one point had given her $20,000, Long said.

Dorrell, a former Razorbacks volleyball player, worked for the Razorbacks Foundation before she was hired by Petrino on March 28. Long said she got the job after a time frame that was "shorter than our normal affirmative action hiring process."

Petrino never disclosed his conflict of interest in hiring Dorrell, Long said. And he ignored multiple chances to simply come clean.

There was a "pattern of misleading and manipulative behavior to deceive me," Long said.

Petrino had built Arkansas into a national power over four seasons, including a 21-5 record the past two years. Petrino guided the Razorbacks to a No. 5 final ranking last season and a Cotton Bowl win over Kansas State.

Long said Petrino was fired "with cause" -- meaning he will not receive a multimillion-dollar buyout. Long declined to comment about Dorrell's job status.

The April 1 accident left Petrino with four broken ribs, a cracked vertebra in his neck and numerous abrasions on his face. During a subsequent news conference and in a conversation with Long, he failed to mention that Dorrell was with him at the time of the accident.

In a statement issued Tuesday night, Petrino said he has "no one to blame by myself." He said he chose to engage in an improper relationship and then made "several poor decisions" following the end of that relationship.

Pro football

Indianapolis Colts owner Jim Irsay said team officials are even more impressed with Stanford quarterback Andrew Luck after a three-hour meeting Tuesday in Indianapolis. Irsay owner wrote on Twitter that it's easy to see why Luck and the No. 1 pick have been synonymous for two years.

Irsay has said the Colts will take a quarterback with the No. 1 pick in this month's NFL draft. But neither Irsay nor general manager Ryan Grigson have said Luck will be the choice.

  • Bill Parcells is unlikely to become the New Orleans Saints' interim coach, according to multiple reports.

    Parcells prefers to remain retired and not replace his protege and friend, Sean Payton, who will serve a season-long suspension for his role in New Orleans' bounty system, the reports said.

    Saints spokesman Greg Bensel declined Tuesday to confirm Parcells has been ruled out as a possible Payton replacement, saying the team "has nothing to report" concerning the search for an interim coach.

    If the Saints decide to select a replacement from their existing staff, the leading candidates are: assistant head coach Joe Vitt, who will serve a six-game suspension; offensive coordinator Pete Carmichael Jr.; offensive line coach Aaron Kromer; new defensive coordinator Steve Spagnuolo.

  • Wide receiver Steve Smith signed a contract extension that will likely keep him with the Carolina Panthers at least through 2015 and probably for the remainder of his career. Smith, 33, will be paid approximately $18 million in guaranteed money over the next three seasons. There is a club option for the 2016 season.

    Miscellany

    Connecticut sophomore guard Jeremy Lamb said he has declared for the NBA draft. Lamb led the Huskies in scoring last season at 17.7 points per game.