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American Gladiators star Lee Reherman has died, aged 49.

The US athlete's body was discovered by his devastated girlfriend at their home in Manhattan Beach, California, on Tuesday.

US gossip website TMZ confirmed the news this evening.

Lee's rep told the site that he had complained about feeling unwell prior to his passing after recently undergoing hip replacement surgery.

READ MORE:Gladiator Shadow reveals how he hit rock bottom after he was axed from show for taking drugs

The show's official Twitter account led tributes to the star this evening: "It is with much sadness we inform you #AmericanGladiators star Hawk @LeeReherman sadly passed away this morning. RIP."

Tweets from fans then began to pour in from fans.

(Image: WENN.com)

"Sad to hear that Lee Reherman, aka #Hawk of American and International Gladiators has passed away, a great character and a true Gladiator," wrote one.

Another message read: "Sad to hear about the passing of former G4 host of "Arena" and American Gladiator "Hawk" Lee Reherman."

Shortly afterwards, this tweet was posted: "Lee Reherman was bigger than life and a super nice guy. He will be missed. RIP."

In addition to American Gladiators, Lee made a name for himself by guest starring on several TV shows including 90210, The X-Files, Hannah Montana and Wizards of Waverly Place.

Most recently, he played secret service agent Ross Hardison on the CW series The First Family.