Police have released a little more information when it comes to a shooting inside a Whitby apartment building on Thursday.

Durham Regional Police now say there were 5 victims in all, with the last person taken to hospital, injured by shrapnel.

And we now know where the actual shooting happened: inside an elevator on the 3rd floor.

All victims are in their teens, between 17 and 19 years old.

As Newstalk1010 pointed out on Thursday, a 19 year old man from Whitby was airlifted to Toronto hospital in critical condition.

He's gone through surgery, and is still in critical condition.

The other three gunshot victims, a 19 year old man from Scarborough, a 19 year old from Toronto and a 17 year old were all treated for serious injuries. One of those victims has already been released from hospital.

Officers now say they are looking for 3 or 4 men, believed to be involved in the shooting. But they haven't been able to release a suspect description.

However, Police say this was not a random act.

Officers are still looking for additional security footage, and are appealing for more witnesses to come forward.