Four people had been living in the home: a man, a woman and two children, neighbors said.
Police paid a visit to the home Monday because the couple, who were boyfriend and girlfriend, had broken up and needed to exchange property, said Erin Behm, spokeswoman for the Syracuse Police Department.
Craig Hawkins, a neighbor, witnessed the police coming to the home Monday and tuned into the incident on his police scanner.
Hawkins said, according to traffic on the scanner, the police were called because the boyfriend would not leave the porch of the house.
Officers spoke with the boyfriend for about 15 minutes, and he left, Hawkins said.
The man returned to the home Tuesday with a moving truck and several people who helped him move stuff out of the house; then they left, Hawkins said.
Hawkins didn't know the residents of the home, and said they moved in house in the fall.
Joe Petersen, a neighbor, said he pulled up to his house Tuesday just before police arrived at the scene. He said an extremely distraught man was in the driveway of the house where the shooting occurred.
Petersen said the man said, "Why did .... do that?" not hearing all of what the distraught man had said.
Petersen went inside his home and his wife Karlene said she had heard a gunshot just prior to police arriving.