Chief Mark Hathaway declined to describe in detail what occurred when the officers approached the armed man, but said on Tuesday evening that the confrontation ended when Officer Dylan Hall shot the man with his service weapon. Hathaway declined to disclose what weapon the man had in his possession.

The man was hospitalized and is expected to survive his injuries. Hall has been placed on paid administrative leave, which is standard procedure when a Maine law enforcement officer fires his or her weapon in the line of duty.

Nadeau, a retired Maine police officer who lives on Grove Street, watched the entire confrontation unfold from about 20 yards away in his driveway.

He was in his garage when he heard shouting, he told the BDN in an interview late Tuesday night. Nadeau said when he walked toward the street, he saw two Bangor police cruisers in the road and three officers with their guns drawn, forming a “semi-circle” around a dark-haired man holding a knife, “screaming at the top of his lungs” and hopping back and forth, he said. Nadeau judged the man to be in his mid- to late 20s.