The girl was at a house for another child’s celebration, the St. Joseph County Metro Homicide Unit said in a release.
South Bend Police were called to the home around 7:40 p.m., after shots were fired from a car driving past, the release said.
Officers arrived to find the girl shot and in “very serious condition,” it said.
“Although there were numerous people in front of the home when the shooting occurred, the child was the only person hit by the gunfire,” police said.
The victim was taken to a hospital where she later died, police said.