A Lewiston man charged with selling stolen tractors on the Internet was back in jail Friday after police charged him with violating conditions of his release.

Matthew Theriault, 25, was arrested by the U.S. Marshal’s Service and taken to the Cumberland County Jail in Portland where he was being held without bail Friday night.

Last month, Theriault was indicted by a federal grand jury on six counts of wire fraud, two counts of interstate transport of stolen goods, two counts of possessing stolen goods, one count of making a false statement on a loan application, one count of engaging in a monetary transaction in criminally derived property and one count of making a false statement to a government agency.

Theriault, son of Lewiston City Councilor Denis Theriault, faces a decade in prison if convicted. But after he was charged last month, Theriault appeared in court with his attorney and was released on personal recognizance.

An official at the Cumberland County Jail on Friday confirmed that Theriault was there but he did not have further information about the newest charge.

The investigation into the stolen tractors goes back to 2006.

Theriault first posted a Kubota tractor for sale on eBay on Oct. 2 of that year, according to the indictment and an affidavit filed by special agent Paul Pritchard of the FBI.

Theriault allegedly posted a second tractor on Oct. 13 and a third on Dec. 3.

The highest bids for the tractors were $13,000, $10,000 and $14,100.

Prosecutors say Theriault personally delivered two of the tractors to buyers in Pennsylvania and New York.

They say he was negotiating the transport of the third to a buyer in Iceland when an investigation began on Dec. 19, 2006, after Lewiston police found a tractor and a cargo trailer that had been stolen from dealerships in New Hampshire and Massachusetts.

Theriault told police he had bought several tractors in Massachusetts, including the one police found in Lewiston. When interviewed in August 2007 by the FBI, Theriault said he had bought multiple tractors and trailers from a man named Steve Gomez in Charlton, Mass.

Prosecutors say Theriault lied about how he got the equipment.

The case against him is scheduled for trial Oct. 5, although Theriault’s attorney has said pretrial motions likely will push it back.