Family and friends of singer Sean Levert are left to cope with his sudden death Sunday night while serving a jail sentence in Ohio.

The 39-year-old son of O'Jays lead singer Eddie Levert died at Cleveland's Lutheran Hospital late Sunday, less than an hour after he was rushed there from Cuyahoga County jail. He had just begun serving a 22-month sentence for failure to pay child support.

Warden Kevin McDonough said he had been sick, acting strangely and hallucinating before he collapsed in his cell. A cause of death has yet to be determined, and toxicology reports could take four to six weeks, coroner Frank Miller told the AP.

“There are no words that can express what we are feeling today.  There is no song that can capture the loss that we have in our hearts," read a statement released Monday by the Levert family.  "But we are humbly overwhelmed by the generous outpouring of love, condolences and support from the many friends, fans and admirers of our son Sean.  At this very difficult time, we thank you for your prayers and hope you will understand our need for privacy.”

In 2006, Sean's older brother Gerald Levert died suddenly at age 40 of an accidental mix of prescription and over-the-counter drugs. Sean, like Gerald, reportedly suffered from high blood pressure, according to the AP.

The siblings had formed R&B trio LeVert during the 1980s with childhood friend Marc Gordon. Their hits included and "Baby I'm Ready," "(Pop, Pop, Pop, Pop) Goes My Mind" and "Casanova."

As previously reported, Cleveland's 19ActionNews.com reported that Levert was sentenced last Monday for owing $85,427.68 in back support for his three children - ages 11, 15 and 17.

Funeral arrangements have not been determined at this time, the family said in its statement Monday.