Boston Mayor Michelle Wu is coming under blistering criticism for offering condolences to the family of a knife-wielding attacker shot and killed by an off-duty police officer who is credited with saving lives at a Chick-fil-A in Back Bay.

Boston Mayor Michelle Wu responded Monday to criticism she received after offering her condolences to the family of a person police say was wielding a knife when he was shot and killed by an off-duty officer inside Chick-fil-A Saturday night on Boylston Street.

The officer tried to de-escalate the situation but the suspect allegedly refused to comply, prompting the officer to fatally shoot him, police said.