CLEVELAND -- Cuyahoga County Sheriff's Office spokesman John O'Brien confirms to Channel 3 that convicted former Cuyahoga County Commissioner Jimmy Dimora is still in the Cuyahoga County Jail.

It was exactly three weeks ago todaysince Dimora, 58, arrived back in Cleveland from federal prison in West Virginia.

It's believed he's been put in front of a county grand jury, helping Cuyahoga County Prosecutor Tim McGinty explore other charges in the Cuyahoga County corruption probe.

No one is saying if Dimora is testifying or taking the Fifth Amendment, the rightto prohibit self-incrimination so as not toimplicate oneself in a criminal offense.

Dimora was taken into federal custody on March 9, 2012, just minutes after he was found guilty on 33 counts, including bribery and conspiracy.

In August 2012, he was sentenced to 28 years in prison.

His only visitors allowed at the Cuyahoga County Jailare family and his lawyers. He's housed in what amounts to solitary confinement or an isolation cell.

From March 9, 2012, until Feb. 5, 2013, Dimora was housed in the minimum security federal facility outside Youngstown. Since then he's been in FCI Gilmer, in Glenville, W.Va. It has one of the top medical facilities in the prison system.