The Ontario Provincial Police were called to investigate a shooting incident at the Hullett Wildlife Conservation Area, near Clinton, Ont., about 200 kilometres west of Toronto, at 5 p.m. local time on Saturday.
A man was found dead at the scene.
On Sunday, OPP Const. Jamie Stanley told reporters that emergency response team officers are participating in a search for evidence at the scene. Forensic officers are also involved in the investigation.
"We do not have anybody in custody," said Stanley.
Stanley said that the family of the victim has been notified, and that a post-mortem will take place, though it has not yet been scheduled.
No arrests have been made so far.
Police deny lockdown
Police said that a lockdown was never in effect and they did not sound a community alarm.
Area resident Diane Proper said she went to the cordoned off area on Sunday and saw dozens of police vehicles and a few ambulances.
Proper said the Hullett Wildlife Conservation Area is popular with hunters and horse riders, and that there was bird-dog training going on there this weekend.
She added that rumours and speculation were rampant as residents tried to figure out what was going on.
"Everybody is just scouring what they can to get some confirmation ... why the silence? Why the mystery surrounding this?"
"Give us something. Should we be in fear of our lives or have they got everything under control?"
Stanley said police want to hear from anyone who may have seen any suspicious activity in the area of the conservation area on Saturday.