Police tape marks a crime scene in this file photo.JOHN LEHMANN
RCMP say they are treating the deaths of three people in a rural Alberta home as homicides.
Mounties found the bodies of a man, a woman and a teenage girl with "obvious trauma" in a house near Edson on Sunday.
Insp. Gibson Glavin said the deaths were not a murder-suicide.
"I will be clear that there was someone out there, or some people, who did this and we have not arrested them yet," he said Monday.
RCMP major crimes investigators and other Mounties were speaking with people in the area west of Edmonton looking for leads and clues, he said.
Police found the bodies after responding to a call from someone outside the home.
Glavin said police don't believe anyone else is at risk, but urged people to be careful.
"We do urge the public to be cautious, to be aware of people or circumstances that cause them to believe that they have some knowledge or some connection with this homicide investigation," he said.
Glavin would not say at a news conference in Edmonton what the relationship was between the dead other than that they all lived in the house.
The investigation is not ruling out any suspects and officers would like to speak to anyone who may have information about what happened, he said.
Autopsies had yet to be performed.