N.S. mass shooter's spouse pleads not guilty to unlawfully supplying him ammunition by The Canadian Press Last Updated May 5, 2021 at 10:58 am EDT RCMP investigators search for evidence at the location where Const. Heidi Stevenson was killed along the highway in Shubenacadie, N.S. on Thursday, April 23, 2020. Police say the man who went on a murderous rampage through five Nova Scotia communities was likely using unlicensed firearms, and investigators are trying find out how he obtained illegal weapons. THE CANADIAN PRESS/Andrew Vaughan HALIFAX — The common law spouse of the man responsible for killing 22 people in April 2020 in Nova Scotia is pleading not guilty to charges she illegally provided him ammunition.