WISCASSET — State police are investigating the death of an inmate found inside his cell at the Two Bridges Jail early Monday morning.

Robi Saputra, 21, of Topsham was found hanging from a bed sheet at 2:18 a.m. by jail personnel. He was alone in his cell and a note was found there. 

Saputra had been checked on by jail personnel during routine rounds about 30 minutes earlier. 

An autopsy was conducted at the State Medical Examiner’s Office, which concluded the death was a suicide by hanging.  

State police investigate all inmate deaths within the state’s correctional facilities.

Steve McCausland, spokesman for the Maine Department of Public Safety, said in a statement that Saputra was awaiting trial on arson charges stemming from a fire last August at a four-unit apartment house fire in Topsham at the former annex of the Brunswick Naval Air Station.

Several days after the fire, Topsham police arrested Saputra in the parking lot of the Merrymeeting Condos where he lived, charging him with arson. The condos are near the base annex. Saputra had been at Two Bridges Jail since. He was also charged with violating conditions of his bail for a prior unrelated drug offense.

The fire began when a recliner was set on fire in an outside storage building, then spread to a carport and the four-unit apartment house, fire investigators said. According to investigators with the State Fire Marshal’s Office, Saputra was on the base annex with three friends on the night of the fire, but the others were not involved in the blaze.

Several weeks after Saputra’s arrest, Zechariah Menchaca, 18, also of Merrymeeting Condos in Topsham was arrested and charged with arson in connection with the apartment building fire.