Jake “The Snake” Roberts was on a flight to Las Vegas Wednesday when he fell ill and collapsed.

Immediately upon landing at the airport, the WWE Hall of Famer was transported to the hospital, reportedly suffering from double pneumonia.

Roberts has since been in and out of consciousness in the intensive care unit as he fights the infection with a weakened immune system.

Fellow wrestler Sinn Bodhi told TMZ that Roberts went to a doctor two weeks ago because of his illness and was told he had the flu. Bodhi, who spent the night with his friend at the hospital Wednesday, said all the doctor told him was he needed rest.

Bodhi said that despite being in pain, the wrestler didn’t follow-up with a second doctor’s appointment, believing he was merely suffering from the flu and the issue would resolve with time.

Wrestler Jake "The Snake" Roberts in intensive care w/ double pneumonia, after collapsing on plane. (media reports) pic.twitter.com/rO5W9fMBsA

— SportsCenter (@SportsCenter) August 29, 2014

Doctors say Roberts’ immune system is compromised, and they intend to do some follow up tests as he continues to recuperate and rest.

“Right now, we’re all just staying positive,” said Bodhi.

UPDATE: @Jakesnakeddt is resting at the hospital. I've been there all night making sure he is comfortable. Thanks for all the kind messages!

— Sinn Bodhi – Kizarny (@SiNNbODHi) August 28, 2014

Recent posts on Twitter from friends and colleagues seem to be encouraging.

Just spoke to @JakeSnakeDDT 's girlfriend, Jake is now conscious but still fading in and out. Please keep the prayers coming.

— Diamond Dallas Page (@RealDDP) August 28, 2014

With @JakeSnakeDDT at hospital, he's more worried about disappointing fans then getting better! We told him 2 shut up &beat this phnemonia!

— Sinn Bodhi – Kizarny (@SiNNbODHi) August 29, 2014

Thoughts and prayers are with #WWE Hall of Famer Jake "The Snake" Roberts. He is in the hospital w/ double pneumonia and a mass on his brain

— Pro Wrestling Nation (@PWNPodcast) August 29, 2014

Keep fighting, Jake 'The Snake' Roberts. You are a tough guy, and a legend. You got this! #DDT @JakeSnakeDDT

— CMパンク (@TeamCMPunk) August 28, 2014

Sending some positive vibes Jake "the Snake" Roberts who is rumored to be hospitalized with double pneumonia and possibly worse.Stay strong!

— Brian Heffron (@TheeBlueMeanie) August 28, 2014

The 59-year-old wrestler has battled cancer and addiction and says his faith gets him through the rough patches in life.

“If the devil can’t defeat me, cancer doesn’t stand a chance in hell!,” Roberts told TMZ in February. “Pray for sick children who face this horrible disease ’cause the snake will be just fine!”