Estevan RCMP responded to a call of a possible drowning at the Woodlawn Regional Park on Sunday afternoon around 2:00 p.m.
A 12-year-old boy was swimming with another person, when he was observed going under the water. RCMP say he has not been located thus far.
An extensive search has been conducted and is ongoing with the assistance of the RCMP Underwater Recovery Team.
Further information will be provided as it becomes available.