BANGOR, Maine (AP) — A jury has convicted a homeless man of setting fire to a delivery truck and killing two other transients who'd been sleeping inside in Bangor, Maine.

The Bangor Daily News reports that John De St. Croix showed no emotion when the jury announced that he was guilty of murder, felony murder and arson on Friday.

A witness testified that De St. Croix argued with one of the victims before the fire was set a year ago, but there was no physical evidence linking him to the fire.

Killed were 43-year-old Michael Bridges and 36-year-old Desiree York.

The blaze was so hot that no one was able to rescue the victims, who were heard pounding on the walls in a frantic attempt to escape.

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Witness Say Defendant Argued With Victims Before Fiery Deaths

BANGOR, Maine (AP) — A witness says a man charged with murder argued with one of the two victims before their deaths in the back of a burning delivery truck in Bangor, Maine.

Harry Seavey, of Bangor, testified Wednesday at the trial of John De St. Croix that he joined the group, but decided to leave because of the drinking and arguing.

Authorities say De St. Croix called 911 and confessed to setting the fire last year.

The fire was so hot that no one was able to rescue 43-year-old Michael Bridges and 36-year-old Desiree York, who could be heard pounding on the walls inside the truck.

Deputy Medical Examiner Dr. Lisa Funte testified both died of smoke inhalation and suffered second- and third-degree burns. Investigators say the fire was started with accelerant and cardboard.​

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