A source close to Odom tells ET that the former NBA pro had some organ failure after he was found unresponsive at the Love Ranch brothel in Crystal, Nevada. While his condition has improved, our source says "it is still dire."
ET can confirm that the former NBA pro's father, Joe, arrived at Sunrise Hospital in Las Vegas, Nevada, where Odom is in critical condition, and Odom's two children are expected later today. Odom's ex, Khloe Kardashian
, has been by his side since first arriving on Tuesday night. Her sister, Kim, and mother, Kris Jenner
, are there as well.