An investigation has wrapped up into a fire six months ago that destroyed three Lewis Estates homes, but residents may never know the cause.

"It did take time to do the interviews and do a thorough scene examination," said fire investigator Joe Koreman. "At this point here we couldn't pin point an exact point of origin."

Investigators have however ruled out arson in the $1.2 million fire.

As CBC's Laura Osman reports in the video, the devastating fire brought the neighbourhood together.