A 37-year-old Surrey mother has been charged with second-degree murder in the death of her son.

The criminal charge against Jaswinder Kang comes almost five years after her four-month-old baby, Jasvir Singh Kang, was found face down in a backyard pool on May 25, 2002.

He died weeks later at Children's Hospital in Vancouver.

For years, Surrey Mounties were unable to push through the case. They did a full sweep of the neighbourhood at the time of the infant's death and conducted more than 250 interviews.

The case was revived last year after police reviewed the city's unsolved homicides.

Of 69 cold cases, the Kang file came up high on the list and the three-member Unsolved Homicide Project Team pursued it aggressively.

"The message is we've not forgotten the victims, nor the family members," said Surrey RCMP spokesman Cpl. Roger Morrow.