The opening was made around noon on Sunday at Brewery Hill Drive and Kelly Drive.
Initially, officers were called to 32nd Street and Thompson to report that the man was shouting.
When police arrived, they were directed to human remains found behind a tree near Kelly Drive.
Authorities say the remains appear to have been burned.
Investigators are still trying to determine what exactly happened and how long the remains lay at the site.
The remains were taken to a forensic expert for examination.
Firefighters were seen pulling a hose up the steps to the rock garden to spray the area.
The case is being investigated by the murder department.
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