Police in the northern city of Hai Phong are investigating a fatal shooting during a fight inside a restaurant that involved a senior police officer.

Initial investigation found that Luong Van Phong, a captain of a traffic police team, went out to drink with some friends at a local restaurant last Sunday night.

His group had a fight with another there. The latter allegedly tried to attack Phong’s group with knives and swords after smashing tables and chairs at the restaurant, according to a police report.

Phong, then wearing plain clothes, announced that he’s a cop but still failed to stop the fight.

One person from Phong’s group then went out to their car to fetch a gun and shoot Bui Duc Ngoc, 34, from the other group.

Ngoc died on the spot.

It has not been disclosed if Phong was the one who fired the shot.