Firefighters responded to a fatal fire at 334 N.W. 41st St. just after 10 a.m. on June 12.

Heavy black smoke was coming from a two-story apartment unit when firefighters arrived. There were initial reports of occupants inside the unit.

Firefighters found five deceased victims inside the apartment – a 21-year-old woman, a 14-year-old boy, a 7-year-old girl, a 5-year-old boy and a 5-year-old girl, according to the Seattle Fire Department.

Another woman and a 5-year-old girl were able to escape from the apartment. They were transported to Harborview Medical Center along with several other family members but were not injured.

One firefighter was also transported to Harborview for a minor injury.

A mechanical problem with the first arriving engine caused a short delay in firefighters’ ability to put water on the fire, according to the Fire Department. The engine has been placed out of service.

Fire damage was confined to one apartment. The unit did have smoke alarms.

The fire investigation is being conducted by Seattle Fire Investigators and the Seattle Police Arson Bomb Unit.