Canadian police are following a tip that two suspects in the murder of a Sydney man and his girlfriend have been sighted in a small town 200 kilometres from the current search operation.

Key points: Bryer Schmegelsky and Kam McLeod are still believed to be in Gillam, in northern Manitoba

Bryer Schmegelsky and Kam McLeod are still believed to be in Gillam, in northern Manitoba Around 1,000 officers are searching for the teens with helicopters and tracker dogs

Around 1,000 officers are searching for the teens with helicopters and tracker dogs Police say 'substantial' delays can be caused by reporting tips to social media only

Bryer Schmegelsky, 18, and Kam McLeod, 19, are wanted for the murders of Lucas Fowler and his American girlfriend Chynna Deese who were found dead on a highway in British Columbia more than two weeks ago.

Royal Canadian Mounted Police (RCMP) this morning said they received a tip-off from a member of the public that the two suspects were in, or near, the community of York Landing, Manitoba.

Last week the pair were spotted 200 kilometres away in the small town of Gillam, Manitoba which has been the focus of police search operations.

"A heavy police presence can be expected in [York Landing]," the RCMP tweeted.

"We will continue to update you as information becomes available."

The suspects were spotted leaving a store in Meadow Lake on July 21. ( Supplied: RCMP Manitoba )

However a RCMP request that members of the public not disclose officer locations by posting photos to social media has been met with confusion.

"Maybe, just maybe don't broadcast where your (sic) going over Twitter, then you won't need to ask people not to share your location," one Twitter user replied.

There are few roads from Gillam to York Landing, which means a journey by car can take up to four hours, including a ferry trip.

Elected chief of York Factory First Nation, Leroy Constant, cautioned residents to remain indoors with windows and doors locked.

"Emergency response teams are conducting ground searches with dogs and heavily armoured officers.

"Currently heavy winds are limiting helicopters and drones," he said.

Police earlier urged the public to stop posting tips on the whereabouts of the suspects to social media, and instead call authorities directly to prevent delays in the investigation.

Investigators have received more than 200 tips in the past five days but the RCMP warned that the investigation could be hampered if tips were not reported straight to police.

"Multiple tips of sightings have been posted to social media & NOT directly reported to police. If the tips are valid, it could create a substantial delay in the response by police," the RCMP tweeted.

Extensive searching has been carried out over the past week in Gillam, with 1,000 officers, helicopters and tracker dogs deployed as well as assistance from the Canadian Air Force.

Police have warned the public that Mr McLeod and Mr Schmegelsky may have changed their appearance and said there was a chance the pair inadvertently received assistance to leave the area.

The pair have already been charged with the murder of 64-year-old Leonard Dyck who was found shot dead in British Columbia on July 19.

Just four days earlier, the bodies of Mr Fowler and Ms Deese were found on the Alaska Highway, 2,000 kilometres away.

Lucas Fowler and Chynna Deese had been travelling the world together. ( Supplied: NSW Police )

Mr Fowler's father, NSW Police Chief Inspector Stephen Fowler, made an emotional plea at a press conference last week in Canada for any information.

He said the couple were inseparable and described their fate as "the worst-ever love story".

Mr Schmegelsky's father, Alan, last week told Canadian media the childhood friends were likely to go out "in a blaze of glory".