HONOLULU -- Former three-time world surfing champion Andy Irons has died.

Phil Irons, the father of the 32-year-old surfer, confirmed his son's death Tuesday. The cause of death was not immediately known.

The younger Irons was found dead in a hotel room in Dallas, where he was on a layover en route to his home on Kauai. He was returning from Puerto Rico, where he was to have competed in the 2010 Rip Curl Pro Search.

Employees at the Grant Hyatt Hotel DFW Airport found the body and called Dallas-Fort Worth International Airport police at 9:44 a.m.

Public Safety officials said the man had checked in Monday and had died of unknown causes.

The Tarrant County Medical Examiner will perform an autopsy Wednesday to determine the cause of death.

Irons was expected to compete against two Australian surfers in his first heat Saturday, but didn't show up, much to the confusion of commentators.

Rip Curl officials said Irons withdrew Sunday, citing an illness he contracted during an event in Portugal.

Family members from Kauai were headed to Dallas late Tuesday.

Irons was scheduled to compete in the Vans Triple Crown of Surfing in Hawaii, which is scheduled to begin next week.

"The thing that I think many of us appreciated the most about Andy was that he was an incredibly real person," Vans Triple Crown of Surfing spokeswoman Jodi Wilmott said. "Where a lot of champions in sports and celebrities become very guarded and you just wonder sometimes if you're really seeing who they are, you've got Andy Irons 100 percent of the time."

Wilmott said Irons was a passionate person and an incredibly competitive athlete.