The incident happened at Penrhyn Bay A 13-year-old-girl has rescued her two younger sisters from a house fire in Conwy, which left her mother and two other adults seriously injured.
The teenager threw a laptop through a downstairs window and neighbours helped the children, aged eight and 18 months, to safety.
Firefighters reached the adults upstairs in the house at Penrhyn Bay near Llandudno.
The girl was woken by a smoke alarm at 0030 GMT on Monday.
North Wales Fire and Rescue Service said the children were all sleeping in a downstairs bedroom of the semi-detached house in Trafford Park.
The adults – the mother, 32, and her two friends, a 32-year-old woman and a 38-year-old man – were upstairs.
The mother is described as being in “serious but stable” and her two friends are said to be “critical”.
The girl was praised for staying calm after speaking to the fire control.
Alyn Edwards, of the fire service, said the girl then used a laptop computer to smash a window and helped the eight-year-old out.
She then passed the baby to her younger sister through the window before breaking another window to make her own escape.
“Her actions certainly gave the family a chance of getting out of the property,” Mr Edwards told BBC Wales.
He said the three children were being checked out at hospital but were not believed to be seriously hurt.
Firefighters wearing breathing apparatus entered the house three times through thick smoke to rescue the adults.
An investigation into the cause of the fire, which is believed to have started downstairs, is under way.
Five fire crews from Colwyn Bay, Rhyl and Llandudno attended the incident.
Gary Brandrick, senior operations manager at the fire servuce, said: “The children were alerted to the fire by a smoke alarm.
“We carried out a home fire safety check at the address in September 2010, when we fitted two smoke alarms and advised the family of fire safety precautions they should take – such as testing the smoke alarms regularly, the importance of having a night time routine and of formulating a family escape plan.”
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