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.

The incident occurred around 5:27 p.m. when two individuals ran into the crowded Back Bay restaurant, attempting to escape a man wielding a knife.

Surveillance footage from a nearby business reveals how busy the area was when an off-duty officer shot and killed an armed man inside a Chick-fil-A in Boston’s Back Bay neighborhood Saturday evening.