(Matheson Lake/Photo by Doug Clement Photography)

A woman has died in hospital after drowning in a lake on Tuesday.

At around 6:45 p.m. on July 21, West Shore RCMP, Metchosin Fire Rescue and BC Ambulance responded to a 911 call for a possible drowning at Matheson Lake in Metchosin.

According to witnesses, a 32-year-old woman had been rescued from the lake, and people in the area had begun administering CPR before paramedics arrived, as she was in medical distress.

Among those witnesses who were available to perform this task were an off duty Oak Bay police officer and an off duty Saanich fire fighter.

Advanced life support was later provided by paramedics and Metchosin Fire Rescue.

The woman was then rushed to hospital where she died. BC Coroners Service is investigating the circumstances surrounding her death.