Hours after fire crews gained control of a house fire Wednesday morning, officials have confirmed the blaze was deliberately set.

Fire crews arrived at the home in the Dovercourt neighbourhood, near 122 Avenue and 104 Street, just before 6 a.m. Wednesday.

On the scene, they found the north wall of the home had been blown off, and the roof was engulfed in flames,

Firefighters were able to contain the blaze in a short time – and keep it from spreading to neighbouring homes.

One man, described as barely conscious and suffering from serious injuries was rushed to the Royal Alexandra Hospital – where he remained Wednesday afternoon.

Investigators have determined the blaze was deliberately set – and caused an estimated $300,000 in damages

Nearby residents said they heard a loud explosion before flames engulfed the home.

"It was very surprising to come over to the other side here and see the whole wall blown out within two minutes of it starting so yeah, something definitely exploded in there," Brendan Thompson who lives across the street said Wednesday morning.

Neighbours said the home had been the scene of criminal activity in the past.

With files from David Ewasuk