When officers arrived at the home, they found a man who had been shot, city police said in a statement.
A fight had taken place outside, near the front door of a house, that led to shots being fired, the statement said. It said a man who was inside the home was shot.
The man was taken to a local hospital in serious condition, but later was downgraded to critical condition, police said.
Police are investigating what led to the fight and whether the victim was the target. They said they don't have a suspect at this time, and anyone with information about the shooting is asked to call the Fort Wayne Police Department at 260-427-1222 or Crime Stoppers at 260-436-7867.