Sean Levert, 39, one of the three members of the R&B trio LeVert, died late Sunday night at Lutheran Hospital in Cleveland, Ohio.

Levert fell ill while serving a prison sentence for non-payment of approximately $89,000 in child support. At the time of his illness, he was being held at the Cuyahoga County Jail, while waiting to be transported to state prison to begin serving a 22 month sentence.

He was transported to the hospital when prison guards reported that he was sick and was acting strangely. A coroner’s spokesman reportedly said that the autopsy was inconclusive, but that foul play had been ruled out. The spokesman further said that the singer suffered from high blood pressure and had been hallucinating in jail. Toxicology reports would take four to six weeks.
The family of Sean Levert has reportedly asked the FBI to investigate his death.

Services are pending.