A 7-year-old girl was shot and killed when an officer’s gun went off during a struggle with a woman in a house where Detroit police were searching for a suspect in the slaying of a teenager, MyFoxDetroit.com reported.

Assistant Chief Ralph Godbee said at a news conference Sunday that Aiyana Jones was hit in the neck by a single bullet and died at a hospital.

“This is any parent’s worst nightmare. It also is any police officer’s worst nightmare,” Godbee said.

Godbee reportedly said officers with the department’s Special Response Team set off a flash grenade as they entered the home about 12:40 a.m. Sunday with a warrant to look for a suspect in the Friday slaying of a 17-year-old boy.

The lead officer encountered a 46-year-old woman immediately inside the front room of the house and “some level of physical contact” ensued during which the officer’s gun went off, according to the station. The officers had reportedly identified themselves as police.

Godbee said Sunday that the shooting was being investigated and all information was preliminary.

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