A rep for Lamar Odom's aunt says he woke up and spoke three days after he was found unconscious at a Nevada brothel on Tuesday.

Alvina Alston, publicist for JaNean Mercer, Odom's maternal aunt and godmother, said that Odom spoke a greeting and gave a thumbs up Friday morning, his first communication since being hospitalized. Mercer is at the hospital with Odom. 

According to E! News, Odom spoke to estranged wife Khloe Kardashian. He allegedly said "Hey, baby," and made a thumbs up gesture before going back to sleep. 

Odom and Kardashian starred on the E! series "Khloe and Lamar" for two seasons. The show wrapped in 2012, and the pair split, though their divorce has yet to be finalized by a judge.  

More details of Odom's condition were not immediately available. The basketball player was found face down, unconscious, at a legal brothel in Nevada on Tuesday. Rev. Jesse Jackson told the media on Wednesday, after having visited the former reality star, that he was on life support.  

Meanwhile, authorities are retracing Odom's $75,000 visit to the Love Ranch brothel to find out why the former NBA star was found unconscious there.

Nye County law enforcement and brothel officials said Odom's incident was a rarity for the Love Ranch, in the rural community of Crystal. They described it as a possible drug-related medical episode.

PHOTOS: Inside Lamar Odom's Vegas room

Odom was found unconscious at the brothel Tuesday with white and reddish substances coming from his nose and mouth. His breathing was consistent, but he seemed to be in a deep, sleep-like state, said Richard Hunter, a Love Ranch spokesman and one of the people who called 911.

Officials tried to fly him by helicopter about 80 miles to Las Vegas, but he had to be taken by ambulance because he was too tall to fit in the aircraft.

Odom's estranged wife, Kardashian, rushed to his side at Sunrise Hospital and Medical Center. Since then, friends, teammates and loved ones have visited and posted requests for prayers on social media.

Authorities have taken a blood sample to find out if Odom overdosed on drugs or alcohol, but the results could take several weeks.

Hunter said Odom scheduled his brothel visit a week in advance and asked for a ride to the business Saturday, arriving at 4:30 p.m. He paid by credit card after putting down an initial 10 percent deposit for the reservation, Odom's first-ever visit to the Love Ranch.

He chose two women to accompany him. Per Nevada law, prostitutes negotiate services and prices privately with customers as independent contractors. Love Ranch owner Dennis Hof gets 50 percent.

Odom spent about $75,000 for a minimum four-day stay, Hof said. The site has a five-day maximum policy, but the owner said Odom talked about staying the entire week to celebrate Hof's recent birthday.

When he got to the brothel, Odom told at least one of the women he had done a "small amount of cocaine" that day, Hunter said.

He added Odom knew the brothel has a strict anti-drugs policy, and the only drugs anyone there saw him take were herbal sexual performance enhancement capsules. Hunter couldn't rule out the possibility that Odom used other substances.

"The only way that's possible is if no one knew it and he had it completely to himself," Hunter said. Hof also said earlier that Odom drank alcohol from the brothel bar.

Odom bought the supplements Reload and Libimax Plus — marketed as sexual stimulants or "herbal Viagra" — at the brothel. Libimax sells for $14.99 per pill. In 2013, the Food and Drug Administration issued a warning against Reload after it was found to contain sildenafil, the active ingredient in prescription Viagra. The hidden additive could cause dangerously low blood pressure in men taking nitrates for high blood pressure or cholesterol.

The Associated Press contributed to this report.