‘Mr. Big’ 1st-degree murder conviction upheld for man who mutilated woman
TORONTO — The first-degree murder conviction handed to a man who beat, strangled and mutilated a young woman before dumping her near-naked body on a trail 11 years ago was upheld Monday.
In its ruling, the Ontario Court of Appeal rejected arguments from Roy Niemi that his trial judge had made errors related to the “Mr. Big” sting that snared him, and that he did not sexually assault the victim because she was already dead when sexual activity occurred.
A jury convicted Niemi, of Orillia, Ont., in January 2013 in the death of Alyssa Watson, 20. A woman walking her dog along an unused railway line in the city in August 2006 discovered the remains.
While Niemi was the last person to have seen Watson alive, according to court records, the critical evidence against him came from a Mr. Big operation in which undercover officers pretending to be criminals gained his confidence and pumped him for information on the killing.


