Experts say there doesn't seem to have been anything explicitly preventing Winnipeg police from reinterviewing a serial killer sooner in their mission to identify his unknown victim — but there's a range of possible reasons that could help explain why it took so long to do it.

At a news conference last month announcing police had determined the woman previously only known as Mashkode Bizhiki'ikwe was 30-year-old Ashlee Christine Shingoose, Deputy Chief Cam Mackid told reporters police drew that conclusion in part because of information gleaned from a second interview they did in December with the serial killer convicted in her murder — more than 2½ years after he first spoke to police.

"Unfortunately the way our legal system works, once we interview someone once, we don't get to ask

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