Social media can help or hurt police investigations such as the one into three homicides in northern British Columbia, says a criminologist.

Frank Cormier, head of the sociology and criminology department at the University of Manitoba, says police have started using social media as a way to get their message out.

"It can be fairly effective as a tool," he said in an interview. "Like any newer technology, it's always a double-edged sword."

RCMP confirmed earlier this week that two bodies found in the dense brush outside of Gillam, Man., were those of Bryer Schmegelsky and Kam McLeod, suspected of killing a young tourist couple and a botanist in B.C. last month.

RCMP Assistant Commissioner Kevin Hackett told a news conference in B.C. last week that media coverage and public engagement were key to the public's level of awareness.

"(It) resulted in police receiving a consistent stream of information and over 1,000 tips," he said.

Hackett didn't elaborate on how the tips came in or where they came from, and no one from the RCMP responded to an interview request.

The Ontario Provincial Police had assigned a team of investigators earlier this month to look into the 100-plus tips about the fugitives in that province.

"It was a combination of a lot of things," said Staff Sgt. Carolle Dionne. "One (was) the coverage in the media, knowing that these two suspects were wanted and running away from police. And then you (had) the indication that they were moving east."

Dionne said the provincial police don't take tips on social media, but received calls from people reporting comments that they had seen on Facebook or Twitter.

"They would say, 'Yeah, I think I've seen them,' and then people would come to us and say, 'So and so said this on their social media account' and then we get it third hand."

Peter German, a former RCMP deputy commissioner, said it's clear that virtually every one of the tips about the case was incorrect.

"That speaks to the issue that police have these days with social media," he said. "The other thing ... is that most of those people really believed that they saw them and that speaks to eye witness identification, which can be so faulty.

"That is a huge issue that police have to deal with ... it's the one that you don't follow up that ends up being the critical one, and the question will then be asked: 'Why didn't you?"'

German said social media has facilitated what's become "tips on steroids."

Several warnings from police and the federal public safety minister telling Canadians to be on alert for Schmegelsky and McLeod made people extra vigilant and led to even more tips, both German and Dionne said.

"Going through all those tips then means more resources," said Dionne. "If you put in more people to triage, then it means you have less people out there."

Dionne stressed that police want people to report what they see because it could be the tip that matters to the investigation. A sighting in Meadow Lake, Sask., for instance, helped police identify Schmegelsky and McLeod as suspects rather than missing persons.

Cormier said the large number of tips shows how intensely the public was tuned into the case.

"Any story that catches the attention of social media becomes multiplied," he said. "It can magnify people's emotional response and that can lead people to be a little bit caught up and police can be flooded with speculation.

"They are people who want to help, but they become a little caught up in the excitement of the story."

In some cases, he said, there are also people who feed false rumours and lies.

"They'll just make things up," said Cormier. "We have trolls everywhere. They take great delight in messing with various processes and procedures."

It's easy to see both sides, he said.

"Social media makes it so much easier, but it can obviously also be a bad thing in some cases."