A man has died while in custody at the Outlook RCMP Detachment.
RCMP say just after 12:30 on Sunday morning a 60 year old man from the R.M. of Fertile Valley became unresponsive.
His name is not being released at this time.
The 60 year old was being observed as part of an impaired driving investigation and had previously been arrested without incident.
EMS were called, lifesaving measures were attempted, but he was later pronounced dead.
The external investigation will be done by the Weyburn Police Service.