DETROIT -

Emanuel Steward, the owner of the legendary Kronk Gym and one of boxing's greatest trainers, has died. He was 68.

Victoria Kirton, Steward's executive assistant, says Steward died Thursday in a Chicago hospital. She did not disclose the cause of death.

The International Boxing Hall of Fame member made his name training Thomas Hearns at the Kronk Gym in Detroit. That paved the way for Steward to work with a long line of champion boxers such as champion Lennox Lewis, during a big part of his title run, and current heavyweight champion Wladimir Klitschko as recently as July.

Steward owned the legendary Kronk Gym, where his fighters were clad in red and gold trunks, and worked as an analyst for HBO.