Police believe another child was responsible for discharging the gun that shot a 4-year-old boy in Ann Arbor Monday morning.

A bullet grazed the child's head and he was taken to the University of Michigan C.S. Mott Children's Hospital in stable condition.

Ann Arbor Police Department Lieutenant Ed Dreslinski said the child's wound was not self-inflicted, but that one of the other children in the house at the time fired the weapon. He said the children were playing with the gun and fired it accidentally.

The other children in the home at the Windsong Townhomes on the 3000 block of Valencia Circle at the time of the shooting were 7, 8 and 9 years old.

The injured boy is believed to have been a resident of the home and it is unclear whether an adult was home at the time.

Lt. Dreslinski said the police do know who owns the gun, but are not releasing that information or filing charges Monday.

"We're still finishing the investigation and finishing some interviews," he said.

"We should know by tomorrow morning once we get a chance to consult with the prosecutor's office what charges may or may not be appropriate in this case."

Neighbors said they heard screams when the incident occurred about 8 a.m. Monday.

"I just seen him standing there crying," neighbor Percy Pryor-Potter, 19, said. "He was holding his side, so I didn't know that his head got hit."

Ben Freed is a general assignments reporter for The Ann Arbor News. Email him at benfreed@mlive.com and follow him on twitter at @BFreedinA2. He also answers the phone at 734-623-2528.