Toronto police have identified a man fatally shot in what investigators believe was a "targeted" incident in Scarborough Sunday morning as 21-year-old Malique Ellis.

Police say they were called to a six-storey building at Eglinton Avenue East and Mason Road, near Markham Road, around 10:30 a.m. That's where they say Ellis was found with multiple gunshot wounds. 

Ellis was pronounced dead on scene.

Toronto Police Service Det. Hank Idsinga told reporters Sunday that the suspect followed a tenant through the secure entrance of the east end building and headed up to the third floor where he allegedly shot the victim up to a dozen times before fleeing down the north stairwell and out into the parking lot.

Scarborough fatal shooting

A man, 21, is dead following a shooting at his home in a Scarborough apartment building on Sunday morning. (Keith Burgess/CBC)

Idsinga estimates the suspect was inside for about eight minutes.    

"I'm glad no one else was struck by any of these stray rounds," he said, noting that other residents didn't appear to be in the hallway at the time. 

Idsinga added that it's too early in the investigation to determine if the shooting took place in the hallway or in the apartment that the victim had been renting with several other people. 

"He may have been in his apartment, the suspect may have knocked on the door, they may have just encountered each other in the hallway, he may have called him out, I don't know yet," he said.  

Scarborough fatal shooting

Toronto police say a dozen shots were fired around 10:30 a.m. at an apartment complex along Eglinton Avenue East at Mason Road. (Keith Burgess/CBC)

No other people were injured in the shooting, according to police. They say a female was also home at the time and that it is not immediately clear what her relationship is to the victim. 

Jeanette Barnido lives on the third floor and said she was eating breakfast with a friend when she heard people talking in the hallway followed by multiple gunshots.

The pair called 911 and left the apartment to see what had happened. 

"I saw a black guy in his mid-20s — he was like almost dead," she told CBC Toronto. "He was shot and there was blood, and there was this woman screaming, 'My boyfriend is dead, my boyfriend is dead.'"

Jennifer O'Toole, who lives in the building, said she also heard the shots go off before leaving her apartment. 

"It was loud. I've never heard gunshots like that before," she said. 

"I didn't know they were gunshots until I came downstairs and saw the body."

She says the man was shot multiple times in the head. 

Homicide detectives are looking for a male suspect, who they describe as wearing a dark coloured hoodie with white laces around the hood, and dark coloured pants and shoes. 

A post-mortem examination has been set for Monday, December 4.