AUBURN — A man seriously injured while fleeing Androscoggin County Jail last month pleaded not guilty Thursday to related charges.

Antonio Abreu, 40, was charged with escape, a felony punishable by up to five years in prison. He was also charged with criminal mischief, a misdemeanor.

He was held without bail.

Abreu apparently scaled a razor-wire-topped fence, scampered across a roof and fell to the ground outside the jail during a morning escape on July 2.

Abreu fell onto the parking lot surface of the county building. He was taken by ambulance shortly afterward to a local hospital. Abreu was seriously cut by the fence’s razor wire and hit his head in the fall, witnesses said.

A convicted sex offender, Abreu was listed on the Maine registry following his 1992 conviction of raping a woman in the Washington County town of Perry. In that attack, Abreu broke into the home of a woman in her late 60s and threatened, assaulted and raped her. He served a portion of a 20-year sentence.

In 2005, he was convicted of aggravated assault in connection with the stabbing of a 23-year-old Lewiston man. He was sentenced to seven years in prison, with all but two years suspended.

He was on probation when he was arrested by Sabattus police and held at the jail on a charge of probation violation.

Abreu had been in the recreation yard with other inmates before his escape. As he made his way over the fence, he was cheered on by other inmates, a witness said.