A man believed to be in his 20s was fatally shot late Saturday afternoon while sitting in a chair inside a Calgary barber shop. Police say this was a targeted incident related to the city’s drug trade.

A man allegedly entered Johnny Scissorhands Barbershop in the 5100 block of 20 Avenue Southeast just after 5 p.m., said a few words to the victim and shot him five times. Witnesses say the victim was shot in the head, neck and torso.

A witness was eating in a nearby restaurant at the time of the incident when a woman ran in screaming for help.

“She said ‘Call the cops, call the cops.’ We didn't understand because she was talking fast,” Mike, who didn’t want his full name disclosed, told CTV Calgary. “I ran from the restaurant to the barber shop and then I saw a dead body on the floor.”

Emergency responders tried to resuscitate the victim at the scene, but were unsuccessful.

Another woman at the scene told police she chased a silver SUV with tinted windows that investigators believe was the getaway vehicle. Police continue to search for the gunman.

Police say the victim was known to them, and the shooting is related to an ongoing dispute between gangs over drugs.

There have been two other shootings related to the drug trade in Calgary this month. Police wouldn’t confirm if they were connected to Saturday’s incident.

“We have several people who were brought in, and we’re trying to determine with description and validate that before we can put it out,” Calgary police Duty Insp. Sheldon Scott said at a news conference.

"We're trying to identify the people or persons that may be involved … we're looking at all resources in the service. This is a priority for us," he added.

While the incident caused panic among witnesses, nearby business owner Huey Deng said he’s not scared. “This was an isolated incident. It seems like the victim was the intended target,” he said.

Police plan to review video surveillance from the crime scene and are interviewing witnesses as part of the investigation.

The shooting is the 90th in Calgary this year, and the 12th gun-related homicide.

An autopsy on the victim was set to take place Monday.

With files from CTV Calgary