A man and a woman are stable in hospital after a fire broke out on the ninth floor of the building.
One person was rescued from a burning tower block and a number of residents were led to safety after a fire broke out at high-rise flats outside Belfast.
Firefighters were called to Coolmoyne House in Dunmurry at about 17:30 GMT as flames and smoke hit multiple floors.
On arrival, crews were faced with “a well-developed fire on the ninth floor” the NI Fire and Rescue Service said.
The flats were evacuated, and four people were treated by paramedics. The fire was extinguished by 18:10 GMT.
Lagan Valley Hospital said that two people – a man and a woman – were stable after being admitted following the fire.
Geoff Somerville, group commander with the Northern Ireland Fire and Rescue Service, said firefighters rescued a man from the flat in which the fire started.
He said they believed the fire was “accidental” and that the man “was making toast at the time”.
“He had moved into his bedroom and then heard his smoke detectors operate in his flat and that alerted him to the fire,” he said.
“I’m very relieved there’s been no loss of life and that’s only because of the courageous actions of our firefighters here today.”