Emergency services and the gas board were called to a flat in Garvel Road in Glasgow's Barlanark area at 2.15pm today.
Two crews from Easterhouse Fire Station scrambled to the scene where they cleared people out of the four-storey flat.
A Strathclyde Fire and Rescue spokesman said: "Firefighters forced entry into the flat and evacuated the building."
Two males and one female were taken to Glasgow Royal Infirmary with suspected poisoning from carbon monoxide.




