Hulk Hogan, the moustachioed, headscarf-wearing icon in the world of professional wrestling, has died at the age of 71, Florida police and WWE say.

In Clearwater, Florida, authorities responded to a call Thursday morning about a cardiac arrest. Hogan was pronounced dead at a hospital, police said in a statement on Facebook.

He was the main draw for the first WrestleMania in 1985 and was a fixture for years, facing everyone from Andre The Giant and Randy Savage to The Rock and even company chairman Vince McMahon.

He won at least six WWE championships and was inducted into the WWE Hall of Fame in 2005.

In 2016, a Florida jury awarded Hogan $US115 million ($174.3 million at current) in his sex tape lawsuit against Gawker Media and then added $25 million in punitive damages.

Hogan sued after Gawker in 2012 posted a video of him having sex with his former best friend’s wife. He contended the post violated his privacy.

Hogan smiled and wore black throughout the three-week trial.

“Everywhere I show up, people treat me like I’m still the champ,” he said of the support from fans.

WWE posted a note on X saying it was saddened to learn about Hogan’s death.

“One of pop culture’s most recognisable figures, Hogan helped WWE achieve global recognition in the 1980s. WWE extends its condolences to Hogan’s family, friends, and fans,” it said.