Halton Regional Police say three alleged incidents took place late Saturday night and early Sunday morning in Milton and Burlington.

Halton Regional Police say the incident happened Saturday morning in Burlington, Ont., when they received reports of a man waving a gun at a driver from his car.

Officers are looking to speak to a man who was seen leaving the area at the time of the incident. 

According to investigators, the victim was found lying on the sidewalk with "obvious signs of trauma" to the chest. 

A man in his 20s is in critical but stable condition following a shooting in Milton on Friday.