FALL RIVER, Mass. (WLNE) — The Fall River Fire Department and Chief Jeffrey Bacon have released the after action report for the July 13 Gabriel House fire that left ten residents dead and multiple others injured.

According to the report, the official cause of the fire is undetermined, but has been narrowed down to “two possible accidental ignition sources: smoking materials or an oxygen concentrator failure.”

These possible causes were also cited by Massachusetts State Fire Marshal Jon Davine in a preliminary report shortly after the fire.

The review of Gabriel House’s compliance with state safety and building code is ongoing by the Department of Fire Services due to the volume of records and cross-checking.

There was no evidence of intentional ignition found by investigators, and

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