Investigators should be able to provide some answers about three homicides in northern British Columbia even though two suspects in the case are believed to be dead, says a former RCMP assistant commissioner.

The manhunt for Kam McLeod, 19, and Bryer Schmegelsky, 18, from Port Alberni, B.C., ended Wednesday when two bodies were found in dense brush in northern Manitoba.

Mounties have said it could be difficult to determine a motive if the suspects can't be interviewed.

Peter German, who retired from the RCMP in 2012, said it will be hard, but there is already some key evidence available that speaks to motive.

"At least one of the individuals seemed to be highly influenced by violent video games," he said. "His father has spoken publicly about what he believed would happen — death, suicide, going out in a blaze of glory.

"That all goes to motive."

Former RCMP assistant commissioner Peter German says police should be able to provide some answers to the families of the B.C. homicide victims and the public. (Chad Hipolito/CBC)

McLeod and Schmegelsky were suspects in the killings of Leonard Dyck, a university lecturer from Vancouver, and American tourist Chynna Deese and her Australian boyfriend, Lucas Fowler. The bodies of the three were found in mid-July near highways in northern B.C.

Police initially treated McLeod and Schmegelsky as missing persons when their charred vehicle was found not far from Dyck's body. The pair had told family and friends they were leaving home to find work.

But investigators later deemed them to be suspects and details surfaced about their use of video games. One account showed Schmegelsky was a frequent player of a shooting game called Russia Battlegrounds, and both young men's Facebook pages were connected to an account with a modified Soviet flag as its icon.

RCMP also said they were investigating a photograph of Nazi paraphernalia sent to another user by Schmegelsky, who was also pictured in military fatigues brandishing an airsoft rifle and wearing a gas mask.

During the manhunt, Alan Schmegelsky told The Canadian Press that his son had a troubled upbringing and the father said he expected the young men wanted "to go out in a blaze of glory."

German said investigators will look at the suspects' social media accounts, any written documents and communication with family and friends.

"It's surprising in this day and age with social media what you can find."

The tougher problem, he said, will be determining why the suspects did what they did in the sequence they did.

RCMP load one of the two bodies found near Gillam, Man., onto a plane bound for Winnipeg on Wednesday night. (CBC)

It may also be difficult to determine why they ended up in Gillam, he said.

"Did they have some sort of a plan that flowed from a video game that they end up in northern Manitoba? What was the next step for them?"

The autopsies, which are being done in Winnipeg, could provide some answers about when and how they died.

German said the work in Manitoba will be complete once those results are available and officers are finished collecting any remaining evidence there, and police in B.C. will continue the investigation.

Two bodies, thought to be McLeod and Schmegelsky, were found near the Nelson River in northern Manitoba on Wednesday. (Tyson Koschik/CBC)

"At the end of the day, they will I'm sure provide some sort of a briefing to the public and certainly to the families to inform them of what has taken place."

Sam Johnson said he hopes there are answers for the three families.

The southern Alberta resident is still waiting for answers after his ex-wife, Jane Johnson, and eight-year-old daughter, Cathryn, were found dead in their Turner Valley home in 1996. It was initially believed they died from smoke inhalation, but an autopsy revealed Jane, who was pregnant, had been stabbed to death.

No one has been charged in the case.

"Obviously I'd like to know why and, of course, you'd like to see the people punished."

After experiencing so much grief, he said, it's important for families to get some justice.

"I feel horrible for the relatives of the victims [in B.C.] ... it's senseless violence with no reason," said Johnson.

"Somebody should pay when they affect your life that badly and that dramatically."