Waterloo Regional Police now say the region's first murder of 2019 was a "targeted incident".
Police also said on Monday afternoon that four people were seen leaving the scene on Southwood Drive in Cambridge the morning of January 31.
"Police believe the victim and the suspects are known to each other," said a release.
Kurt McKechnie, 56, of Cambridge was found injured in a residence just before 6:30 a.m.
He was later pronounced dead in hospital.
A post-mortem determined McKechnie died of gunshot wounds.
Police continue to investigate and are asking anyone with information to call them at 519-570-9777 ext. 8309 or Crime Stoppers at 1-800-222-8477.