Longtime Indianapolis Colts owner Jim Irsay died on Wednesday, the franchise announced. Specifics of his death are not yet known, though Irsay has dealt with various health issues in recent years. The Colts said that Irsay “passed away peacefully in his sleep” on Wednesday afternoon.

Jim Irsay, the longtime owner of the Indianapolis Colts who presided over one of the team’s most successful eras, has died. He was 65. The team released a statement saying that Irsay had “passed away peacefully in his sleep” on Wednesday afternoon.

The NFL lost one of its most prominent, outspoken and charismatic leaders and one of its most eclectic figures Wednesday when the Indianapolis Colts announced the death of the franchise’s longtime owner,