A 4-year-old girl was hospitalized with a gunshot wound to her leg Thursday evening in Des Moines, police said.

The girl was in stable condition when she arrived at the hospital, according to a Des Moines police report. The injury does not appear to be life-threatening, police said.

At about 7:20 p.m., Des Moines police were called to Mercy Medical Center, 1111 Sixth Ave., to investigate the girl's gunshot wound, according to the report.

The girl's parents both told police "that the child was playing, unsupervised, when the child located a firearm under her parents' bed" in their home in the 2900 block of Dean Avenue, police wrote in the report.

"The parents stated the firearm was in a case, but the child somehow dragged the firearm to her bedroom, opened the case, and shot herself one time in the right thigh," police wrote.

One of the parents told police she heard the gunshot from another room in the house and rushed to find her daughter injured, according to the report. This parent then took the child to the hospital, she told police.

The other parent, who arrived to the hospital in a separate car, told police he picked up the firearm used in the shooting and put it back in the case, then picked up the spent shell casing carried it with him to his car, according to the report.

Police collected the shell casing from his car as evidence, according to the report.

This parent told officers that he had another gun, but he took it to a relative's house before going to the hospital "because he did not want any more guns in the house," according to the report.

Des Moines police spokesman Sgt. Paul Parizek said, "I think it's safe to say (the shooting is) accidental, as a 4-year-old can't form the intent to shoot themselves. There certainly appears to be negligence on the part of the gun owner."

The shooting remains under investigation by police.

An updated medical condition for the girl was not available Friday morning.