Khloe Kardashian's ex husband Lamar Odom "fighting for his life".

Basketball pro Lamar Odom is reportedly fighting for his life after being found unconscious on Tuesday afternoon.

Odom, 35, who is better known to many as the ex-husband of Khloe Kardashian, had allegedly been “partying for days” at a Nevada brothel called Dennis Hof’s Love Ranch Cathouse, according to TMZ.

He was transported to a local hospital where he was intubated because he was unable to breathe, then airlifted to Las Vegas for further treatment.

TMZ’s sources say Odom’s prognosis is “not good”.

Odom’s career has stalled in recent years and he’s currently a free agent. His marriage to Kardashian ended when she filed for divorce in 2013 after four years of marriage.

It was reported at that time that he had been struggling with an addiction to crack cocaine.

Odom was seen in August, confronting the reality star on the street as she walked into a gym in a troubling scene that occurred soon after their divorce was finalised.

Odom is the father of two children from a previous relationship: Destiny, 17, and Lamar Jr., 13.

He had reportedly been at the Nevada brothel since Saturday.