Heavy black smoke could be seen billowing from East Saint John just before 3 this afternoon.
City fire crews responding to the scene at 25 Russell street.
Acting District Fire Chief Kevin Clynick tells CHSJ News says people are living in home and all were evacuated when crews arrived on the scene.
Clynick says they are not sure of the cause, the fire investigator is on the way to the scnee and crews have the fire under control now.
The flames extended up the outside of the building into the roof area.
City police have barricades set up in the area, access to Russell Street blocked to traffic at Rothesay Avenue and Kane's corner.
Clynick tells us they expect to be on the scene for another 90 minutes.
He is not sure when the residents of the home can get back in but, he says they will be offered assistance.