Detroit police on the scene of a barricaded gunman since late Sunday night.
Smith ultimately killed his girlfriend and two of her friends who had gone to the home to help with a domestic situation, officers said. He was taken to a local hospital, where he was listed in stable condition, police said.
"It was believed at one time during this situation that he may have also been firing shots", Craig said.
The incident comes weeks after Detroit Police Officer Glenn Doss Jr., 25, a Detroit native and two-year member of the police department, was shot in the head the night of January 24 while responding to a domestic dispute.
All officers were shot in their legs, although all are considered minor injuries.
Detroit Police Chief James Craig says the suspect has been identified as a 49-year-old man.
Two people are dead and two others injured including a police officer following a shooting in Detroit.
The suspect had shot and killed the women, shot the DPS officer and then started firing upon Craig's officers. The suspect does not have a criminal history, Williams added.
Police, as of about 12:30 p.m. Monday, had Michigan State Police-owned robots on scene capable of entering the home, climbing steps and relaying video images to the command staff.
At one point, the gunman was heard saying he "wouldn't go down without a fight". Craig said about nine of his responding officers were pinned down by gunfire for about an hour.
Police say a 14-hour standoff in Detroit has ended with the deaths of three women and the suspected gunman. He was a valid CPL holder and had at least seven guns registered to him.
Doss' shooter is believed to suffer from mental illness.
Despite earlier reports that the suspect was contained, Craig said police took a neighbor into custody and determined the individual did not fire any shots.
The first suspect, barricaded with seven weapons, is known to officers. "This is national. When will it end?"