UPDATE: Sources say mob boss killed in Ancaster

An investigation is underway into a fatal shooting in Ancaster.

Police are looking for witnesses after they were called to a home around 10 last night on Sunflower Crescent near the 403 and Mohawk Road.

When officers arrivd they found a 50 year old man who was eventually pronounced dead at the scene.

Police say it was a targeted shooting but have nor released the victim's name

A police source says the victim is a well known mob boss.

Police continue to search for suspects.