Second-degree murder charges have been laid against Surjit Dosanjh after a house fire in Richmond, B.C. left his mother-in-law dead and a 13-year-old boy in critical condition.

Elaine Leznoff, 66, died in the fire, which was declared an arson by the Integrated Homicide Investigation Team (IHIT).

IHIT said Friday that the injured boy, Kalvin Dosanjh-Leznoff, is not expected to live.

Dosanjh, 37. was estranged from his family earlier this month, and was not living at the home at the time of the fire.

Richmond firefighters were called to the home in the 10000 block of Cornerbrook Crescent around 2 a.m. PT April 13, after reports the home was engulfed in flames.