A gunman opened fire inside a police station, wounding four officers including a commander before he was shot dead.
The gunman walked in through the Detroit, Michigan, precinct’s revolving door shortly after 4pm local time and opened fire randomly at officers, police said. The officers fired back, killing the gunman.
“Utter chaos and pandemonium took place,” Police Chief Ralph Godbee told a news conference.
“We have a number of officers who are shaken up.”
Mr Godbee said the gunman had been identified but it was “too early to characterise” him while the investigation was continuing.
The chief said along with the commander, two sergeants and an officer were wounded, but none appeared to have life-threatening injuries.
The commander, who was shot in the back, appeared to be the most seriously wounded. Mr Godbee said he underwent surgery and his prognosis is “very good”.
A sergeant and an officer who each suffered graze gunshot wounds to the head were both talking and alert, he said.
A female sergeant was also treated and released after her protective vest deflected a bullet to the chest, Mr Godbee said.
Police also did not immediately release the names of the wounded officers.