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TMZ reports that rapper and entrepreneur Rick Ross has been hospitalized in Miami, after suffering what’s being reported as a potential heart attack, or possibly serious complications from pneumonia. Ross was taken to the hospital on Thursday morning, after initially being found unresponsive in his mansion. (He later woke, and was “combative” with authorities.) According to TMZ, he’s since been placed on a system known as extracorporeal membrane oxygenation, typically used as a life support measure for people who’ve suffered either lung or heart failure that leaves them unable to properly oxygenate their own blood.

Ross, 42, has had a history of physical problems; he suffered a series of seizures in 2011 that raised some serious concerns about his health. It’s not precisely clear what his prognosis is at the moment, though; at least one family member has denied that he was hospitalized at all, but TMZ sounds fairly convinced he’s been placed on the ECMO, a fairly invasive life-saving technique. The rapper’s friend and label member, Fat Trel, has said that he’s talked to Ross today, though, confirming that he’s in the hospital, but denying that he’s on “life support.”