Police and firefighters are working together to establish the case of fire after emergency services were called to Ferry Road at around 2am this morning.
Firefighters rescued a man who was taken to Edinburgh Royal Infirmary and a child from another property was taken to the Royal Hospital for Sick Children.
A Police Scotland spokeswoman said: “Police in Edinburgh are carrying out a joint investigation with the Scottish Fire and Rescue Service following a fire in Ferry Road in the early hours of Tuesday January 3.
“A man was taken to the ERI for treatment, where he remains in a critical condition.
“A child from another property was taken to the Sick Kids hospital as a precaution.
“Inquiries to rule out any suspicious circumstances are ongoing and at an early stage.”
