Update: Wednesday, 6:10 a.m.
An adult woman died as a result of smoke inhalation she suffered in the fire, according to the Billings Fire Department.
A second person taken to the hospital has been released.
The fire caused an estimated $60,000 in damages but was contained to the single apartment unit.
Update 9:15 p.m. Two people were taken to the hospital with unknown injuries following an apartment fire in north Billings Tuesday night.
Firefighters were called about 8 p.m. to the building at the 100 block of North 22nd Street, Battalion Chief Jason Lyon said. Within 45 seconds, firefighters had rescued one of the victims, he said.
Two other people in the building were injured but refused transport, Lyon said.
The fire was contained to one room in the three-story building, according to Lyon.
The cause is under investigation by Billings Deputy Fire Marshal Jamie Fender.
The building will likely remain closed for 24 hours during the investigation.
The Red Cross is setting up a shelter for displaced apartment residents, Lyon said.
A large crew responded the fire - six engine companies, one ladder trucks and two medics - because of the chance of large-scale injuries throughout the building, Lyon said. Consequently, the department was left with one other engine for the rest of the city, which shifted from the West End to central Billings to respond to calls, he said.
An apartment building is on fire in north Billings Tuesday night.
The building is on the 100 block of North 22nd Street.
This is a developing story. Check back for updates.