The preliminary decision was reached Saturday despite problems obtaining the cellar of this Badim hospital due to collected water and lousy visibility. Police officers were investigating why the generator failed.
The fire started Thursday night and disperse throughout the hospital, forcing employees to wheel patients to the roads on stretchers. A lot of these 11 dead were older.
Many victims died of asphyxiation as smoke filled the wards, and a few expired when life support gear ceased working in the flame.
The hospital is a short stroll from Maracana stadium, that was utilized for World Cup games and the 2016 Rio Olympics.