09/11/2011 03:01 EDT | Updated 11/11/2011 05:12 EST

Autopsy on 3 Gatineau, Que., bodies Monday

An autopsy will be conducted Monday on three people found dead in a Gatineau, Que., house.

Gatineau police found a gun near the three family members, who were found dead inside a house Friday night. But police said they do not know what happened and won’t say how the victims died.

A man and woman in their 50s and a son, in his 30s, were discovered by a visitor at about 7 p.m.

The three died violently, but police aren’t ready to say if they were shot to death, Sgt. Mike Lachapelle said Sunday.

They’re considering the theory the deaths were the result of a “family drama,” or murder-suicide, he said.

Investigators finished their work Saturday morning at the house at 115 Saguenay Street in the east end of the city north of Ottawa.

Lachapelle said he didn’t know if the son lived in the brick bungalow with his parents, but neighbours said all three lived together.

The couple each had children from previous marriages.

Flowers left at house

On the weekend, shaken neighbours and others were placing flowers outside the house on the quiet residential street.

Neighbour Angele Fourchene said she was cooking when she heard police and ambulances outside her door.

“I said, ‘Oh my God, it must be serious’ because it’s non-stop, the sirens are just going on and on and on,” she recalled.

Police said their database doesn’t indicate any previous problems at the house.

Lachapelle wouldn’t release any other details, including the names of the victims.