By Steve Lambert Three men have been charged with killing a Manitoba woman who disappeared in 2020 and whose remains were found three years later on an abandoned property near the Saskatchewan boundary. RCMP said Monday the three men were all known to Melinda Lynxleg, of Tootinaowaziibeeng Treaty Reserve, also known as Valley River First Nation, and one was a close relative. “This is an extremely complex investigation,” Sgt. Morgan Page of the RCMP major crimes section told reporters. “We’ve been working with our lab and with all of the witnesses and the people surrounding Melinda at the time of her death,” she added later. Lynxleg, a 40-year-old mother of six, was last seen at a residence near Grandview, Man., in April 2020. Her body was found in June 2023 on…