One woman was taken to the Royal Victoria Hospital in Belfast and the other is being treated at the Ulster Hospital at Dundonald.
Fire service spokesman Brian Greer said: "When the crew entered the building they assisted one female from the flat, then they re- entered and rescued a woman from the bedroom of that flat.
"It was a small fire at the time the brigade carried out the rescue and it was only subsequently we realised there had been some form of gas explosion."
Mr Greer said a window had been blown out by the blast and damage caused to the internal structure of the building.
Written by Daily Mirror
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