The property management company of a Moiliili condominium building is assisting residents affected by Saturday’s three-alarm fire that broke out on the high-rise’s top floor.

“Associa Hawaii understands the impact of this event on the community. We are working diligently with the Rainbow Place board of directors to assess damages and determine the next steps of the recovery and restoration process. That process will include gathering information on specific units impacted by the fire and those that may have experienced smoke and/or water damage,” said Andrew Fortin, senior vice president of external affairs of Associa’s corporate office based in Dallas, in an emailed statement Monday.

“In response to an event like this, there is not a quick solution. The process will take time to gather information and determine how to best proceed. We’ll work with the board to keep the residents updated. Our immediate focus is on our residents and working to help those affected by the fire,” he said.

Honolulu Fire Department investigators found that the fire was caused by an unspecified arc in a lighted display case. It was ruled an accident.

Damage was estimated at $484,000 to the unit and $40,000 to its contents.

Damage estimates to neighboring units were not available.

Sixteen HFD units with more than 55 firefighters responded to the fire, which broke out in unit 2101 at Rainbow Place at 2754 Kuilei St. at about 10 a.m. Saturday. The man who lived in that unit was not home at the time of the fire.

When they arrived, they saw the top floor of the building engulfed in flames and thick black smoke billowing from a lanai, said Honolulu fire spokesman Capt. Scot Seguirant.

Residents in the building were evacuated via stairwells.

A sixth-floor resident described as an 83-year-old man suffered a cardiac arrest after he exited the building. He was taken in critical condition to a hospital.

Firefighters brought the fire under control at 10:40 a.m. and extinguished it just before 11 a.m.

Rainbow Place, built in 1976, does not have a fire sprinkler system.

Associa’s national nonprofit, Associa Cares, has designated $25,000 to assist homeowners affected by the fire.

The property management company encourages affected residents to email info@associacares.com for information on how to apply for funds.

Christine Donnelly is on vacation. Kokua Line returns Wednesday.