The province's Special Investigations Unit has determined that there are no reasonable grounds to charge a Toronto Police officer following the shooting death of 38-year-old Peter Lumanglas.

It was late night, April 15.  The SIU says Constable Jeff Blair located a man in the Allen and Lawrence area who he believed had been speeding.

While searching him, and after finding what he believed to be drugs, the SIU says the man grabbed a pocket knife and stabbed the officer three times, including once in the neck.

Constable Blair drew his gun and ordered Lumanglas "don't move," but Lumanglas approached the injured officer with the knife raised above his head.

That's when Blair fired three shots into the man's chest, then two more when Lumanglass tried to get back up.

The SIU says all 5 shots were justified.

(With files from David McKee)