An autopsy on Sean Levert was inconclusive, yet foul play was ruled out as the singer's cause of death, authorities said Monday.

The Cuyahoga County Coroner says Levert's body showed no signs of physical trauma. They are currently awaiting toxicology results, which won't be available for another four to six weeks.      

TMZ.com reported Tuesday that Levert had to be physically restrained by guards at the Cuyahoga County Jail preceding his collapse. As previously reported, the artist was "out of control" and "hallucinating" before being placed in a restraining chair because he was a danger to himself.

The jail's warden, Kevin McDonough, told TMZ that Levert was cooperative and "went willingly" when jail staff bound his wrists and shackled his feet.

Sean Levert had pleaded guilty last week to failing to pay $89,025 in child support for his children ages 11, 15 and 17. He was sentenced to one year and 10 months in jail.