A man fatally stabbed in Canarsie was among four people killed in a violent week across Brooklyn.

Police say 34-year-old Isaiah Freeman was fatally stabbed around 8 p.m. Wednesday, near Seaview Avenue and Rockaway Parkway.

Exclusive surveillance video obtained by News 12 appears to show some type of argument and fight breaking out outside a deli in the shopping plaza. In the upper corner of the video, a person wearing a white shirt can be seen swinging toward Freeman’s chest area.

Moments later, Freeman backs up several steps before collapsing onto the pavement.

Investigators say Freeman was found with a stab wound to the chest. EMS rushed him to Brookdale Hospital in critical condition, but he later died.

It's one of four violent incidents across Brooklyn this week.

On Monday, a 68-year-old man was injured and 41-year-old Kevon Lee was shot and killed inside a Flatlands Laundromat around 8 a.m.

On Wednesday, a man was stabbed to death outside a restaurant in Cypress Hills.

On Thursday, a man was stabbed to death and another was injured in Sunset Park.

Amid the recent incidents and with summer on the way, Pastor Louis Straker Jr., with anti-violence group The God Squad, says the need for prevention is crucial.

"Someone is hurting tonight because their loved one is gone. Someone didn't value the human life and just thought that it would be an easy way to solve their conflict by harming someone and taking their life. So we have to find another way," said Straker.

In connection with the Canarsie stabbing, no arrests have been made and a police source tells News 12 that investigators are looking for three women who ran away after the stabbing.