Police say their investigation into the slaying of a Regina couple and their son five years ago is now considered to be a cold case.
The decomposed bodies of Gray Nay Htoo, Maw Maw Htoo and their three-year-old son Seven June Htoo were discovered by a property manager in the family's townhouse in August 2010.
The victims were Karen refugees who had lived in Regina for about two years after moving from a refugee camp in Thailand.
Dean Rae, Regina's deputy police chief, said a $50,000 reward is still be offered in the hope that it will generate leads that could help solve the homicides.
He said the case is still open and remains a priority.
"We are optimistic that somebody out there has a piece of information or something that they could give us that would open up a door and allow us to bring this thing to resolution," Rae said Thursday at a news conference.
The murder investigation is considered the biggest in Regina's history and has involved as many as 60 investigators over the years, including members of the RCMP and FBI.
Police said a Mountie of Karen descent was assigned to the investigation from the start and has openly lived and worked with Regina's Karen community for more than four years.
Investigators have conducted more than 200 interviews since the bodies were discovered, most involving Karen-speaking people.
"Language was identified as a significant obstacle from the start of the investigation," police said in a release.
— With files from CKRM
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