On January 25, 2023, at 9 p.m., the West Parry Sound OPP assisted by Parry Sound District Emergency Medical Services (EMS) and Seguin Township Fire Department responded to a missing person on Oastler Lake.
Police were advised that a person did not return to a planned location and after a search of the lake Motorized Snow Vehicle tracks lead to open water.
Heather Lockwood, 29 years-of-age of Sudbury, is confirmed deceased after going through the ice on a motorized snow vehicle (MSV) on Oastler Lake in Seguin Township.