By Ariana Bacle
October 14, 2015 at 07:59 PM EDT
Jason LaVeris/FilmMagic

Athlete Lamar Odom was found unconscious at a Las Vegas brothel on Tuesday and rushed to Desert View Hospital in Las Vegas. Now, PEOPLE is reporting that a source claims doctors found “cocaine and opiates” in his system.

Odom, a former NBA player and Khloé Kardashian’s ex, has struggled with addiction in the past: In Sept. 2013, PEOPLE reported that he had checked into rehab soon after getting arrested for driving under the influence. 

“Lamar is still fighting,” a source close to the Kardashian family told PEOPLE. “It’s a waiting game right now. The first 48 hours will tell a lot.”

The Kardashian family has yet to make an official statements about Odom’s condition, but Khloé’s sister, Kendall Jenner, posted a message on Twitter following Odom’s hospitalization.

Khloé, sister Kim Kardashian West, and their mother, Kris Jenner — along with Odom’s former teammate Kobe Bryant — have all visited the ex-Lakers player in the hospital. As PEOPLE reported, Odom and Khloé are still legally married; despite signing their divorce papers this past summer, the documents were not entered into court.