Toronto homicide detectives are back at the Regent Park apartment building where  Tyson Bailey was found shot on Friday.

The 15-year-old was found bleeding in the stairwell of a Toronto Community Housing building on Whiteside Place, in the Dundas & River area.  He had been shot 4 times. Bailey was rushed to hospital where he was later pronounced dead.

Cops returned to the building Sunday to search a unit on the 13th floor.  Bailey didn't live in the building though his home was nearby.

Investigators have called him a "fine, young man" without a criminal record & say nothing points to any gang involvement.

Grief counsellors will be on hand at Central Technical School Monday, where Bailey was in the 10th grade.

Bailey's football coach Norm Davis & Central Tech principal Sheryl Freeman will also speak to the media about him.

Police are looking for 2 persons of interest in the case:

-a tall, skinny white man, 25-30 years old with a pock-marked face. 
-a black man, shorter than the first , also 25-30 years old, wearing a black jacket at the time of the shooting.

With files from Dave Bradley, James Moore & Dave Woodard