At least six people were found dead in an apartment in this Vancouver suburb, and police said Saturday that the victims appear to have been targeted.

Cpl. Dale Carr, a Royal Canadian Mounted Police homicide investigator, told a news conference outside the building that the six victims were all males, but he had no further details about their ages. He said police were still trying to identify the victims.

The bodies were discovered Friday by firefighters and hazardous materials workers responding to a reported gas leak, Carr said.

"Upon arrival of fire and ambulance, it was quickly determined that they were not dealing with a gas leak but rather a homicide scene," he said.

Police said they have not ruled out a case of homicide-suicide.

Police were interviewing residents of the building to determine whether they may have smelled decomposing bodies in the 15th floor apartment and mistakenly thought it was a gas leak, Carr said.

Carr described a grisly "very complex" crime scene with bodies found in various rooms of the apartment. He said they appeared to have been targeted.

The building which has about 100 apartments was evacuated but residents were allowed to return late Friday night, except for residents of the 15th floor near the crime scene.

Carr said it is too early in the investigation to be certain but at this stage it does not appear that the apartment was being used for growing marijuana as had been suggested by neighbors.