Police say the owner of a Montreal fashion boutique where two men were murdered on Thursday has been arrested.

The shop owner hasn't been formally identified, but police say he is a 41-year-old man. Police say the arrest is tied to allegations that the man violated his bail conditions.

The suspect will likely appear in court through a video link on Saturday.

Police have been reluctant to comment on the man's identity, but business directory records show that the owner is listed as 41-year-old Ducarme Joseph.

Court records show that Joseph was charged with weapons violations last September, CTV Montreal reports. His bail conditions stated that he could not communicate with people linked to criminal activity.

The arrest comes a day after Old Montreal was shut down by a brazen, daylight shooting that killed two people and injured two others.

Sources have said that the shooting bears all the hallmarks of a professional hit, and police said that the fashion boutique had been on their radar.

The incident happened Thursday afternoon, when two gunmen walked into the Flawnego clothing boutique and started shooting. Four people were shot, two of whom died. Police were alerted about the shooting at 1:45 p.m.

The killers fled the scene on foot, discarding parts of their disguises -- including a dreadlocked wig -- into the street.

Detectives were at the scene on Friday, though most police tape had been removed.

CTV Montreal's Rob Lurie said Yvan Delorme, the city's police chief, had made a personal appearance at the scene Thursday, an indication that the force was taking the incident very seriously.

Montreal police Const. Anie Lemieux said police had been watching the location where the shooting took place for some time. And she said investigators have theories as to who the killers were seeking to harm.

Lemieux described the suspects as two tall, black men who wore disguises that included ski-masks and wigs.

"A lot of elements were seized on the scene of this incident and also around the place where this incident took place," Lemieux said.

Two dead, two injured

Two of the victims have died and another two were in stable condition after the shooting. That includes one victim who drove himself to hospital after the violence.

Lurie reported that three of the four shooting victims are known to police and that they range in age from 27 to 59.

The fourth victim was an apprentice electrician who is in stable condition with serious injuries. Police believe "he was just someone who was in the wrong place at the wrong time," Lurie said.

Several witnesses were present at the time of the shooting, including construction workers and other bystanders, some of whom saw the killers taking off their disguises as they fled the scene.

On Friday, a construction worker came forward and said that he was in the store at the time of the shootings. He described a scene of horror.

In an interview with CTV Montreal, the man said that he hid behind a piece of furniture just as the gunmen came into the shop.

"I was trying not to be seen," he said. "I don't want to get shot."

The man, who did not want to be identified, said that the other wounded worker was simply unlucky.

The witness said he didn't get a good look at who pulled the trigger inside the shop, but he said that the brutal scene will haunt him for years to come.

Rizzuto connection?

Police sources have indicated investigators believe the shooting could be linked to the December murder of Nick Rizzuto Jr., the son of reputed Montreal mob boss Vito Rizzuto, who is currently serving a 10-year sentence in a Colorado prison for racketeering.

But the Montreal police force has made no official comment on the possible link to the Rizzuto murder.

Experts have long predicted reprisals for the younger Rizzuto, who was only 42 years old when he was gunned down in December. His killing remains unsolved.

Nick Rizzuto Jr., was named for his grandfather, 86-year-old Nicolo Rizzuto, who pleaded guilty to two charges of tax evasion in a Montreal court last month.

Crime expert Julian Sher, who has written extensively on the criminal underworld, said that some of the violence in Montreal lately can be attributed to a power shift.

"A new generation of leaders is trying to come to the fore to put their stamp on the underworld, and that's why we're seeing some of these shakeups," Sher told CTV Montreal.

"We're in for a long period of uncertainty."

With files from The Canadian Press and a report from CTV Montreal's Rob Lurie