The knife-wielding attacker shot and killed by an off-duty Boston police officer after refusing to back down from terrorizing Chick-fil-A patrons in the Back Bay this weekend has been identified.

Surveillance footage from a liquor store near the Chick-fil-A in Boston’s Copley Square captured the “traumatizing” moment when dozens of people sprinted away after an off-duty police officer shot and killed a man wielding a knife inside the restaurant on Saturday evening.

Security footage obtained by the Globe shows a panicked crowd fleeing the Chick-fil-A restaurant in Copley Square Saturday evening at about the time an off-duty police officer shot and killed a person police say was wielding a knife and trying to stab people.

A 17-year-old high school senior says she was standing in line at the Chick-fil-A on Boylston Street in Boston when an off-duty officer shot and killed a knife-wielding man on Saturday.

Two people were chased inside Chick-fil-A on Boylston Street around 5:27 p.m. by a man armed with a knife, officials said.

Police on Monday identified the person who was fatally shot by an off-duty police officer inside a Chick-fil-A restaurant in Boston as a 32-year-old Roslindale man.

An off-duty Boston police officer shot and killed a man who was allegedly trying to stab people inside Chick-fil-A with a knife, according to police.

Surveillance video shows people running out of a Chick-fil-A after police said an off-duty officer shot and killed a man chasing two people with a knife.

An off-duty Boston police officer on Saturday shot and killed a Roslindale man who was wielding a knife inside a busy Back Bay restaurant. Here's what to know.