
The arrest came after forensic experts searched the burnt building and found seven more bodies, raising the death toll to 12.
The fire broke out at the Maupiya Sewana Elders Home on Wednesday. An AFP photographer saw the manager, wearing handcuffs, being taken to the site as police questioned survivors and local residents.
The facility housed elderly people as well as some young residents with mental health conditions.
Police said the youngest victim was a 17-year-old boy.
According to police spokesman Fredrick Wootler, 51 residents and staff members who were rescued from the fire have been moved to a nearby government-run facility, reports UNB.
Authorities are continuing their investigation to determine the cause of the fire.