A Lewiston man convicted in a 2002 fatal stabbing of a Bates College student has been charged with assaulting a fellow prisoner at the state prison in Warren.

Brandon Thongsavanh, 34, reportedly used a homemade knife in the attack, according to a report published Monday in the Rockland-based Courier-Gazette. That newspaper reported Thongsavanh allegedly stabbed fellow inmate Richard B. Coleman on April 2. Thongsavanh made his initial court appearance Monday.

This isn’t the first time Thongsavanh has been in trouble during his imprisonment.

He was accused in 2006 of stabbing another inmate in the chest and leg with a homemade weapon at the Maine State Prison in Warren, where he now resides. He pleaded guilty and was sentenced to 15 additional months in prison.

Thongsavanh is serving a 58-year sentence for the March 2002 stabbing death of Bates College senior Morgan McDuffee. In that attack, which happened during a street fight on Main Street in Lewiston, McDuffee was stabbed five times, including once in the heart, prosecutors said.

Thongsavanh was twice convicted of the murder charge after having successfully appealed his first conviction.

Brandon Thongsavanh

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