The video from a neighboring business’s external security camera shows two people running into the Chick-fil-A at about 5:26 p.m.

An off-duty Boston police officer shot and killed a man inside a Back Bay Chick-fil-A restaurant who the police department says was running at two other people with a knife. “The individual … attempted to stab the two individuals involved,

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.