Authorities say a 6-year-old boy playing with a gun accidentally shot his 4-year-old brother in the head in their home.

A spokeswoman for the city of East Orange, New Jersey, told NJ.com (http://bit.ly/28V271S) the shooting occurred around 11:15 a.m. Saturday. The wounded child was being treated at a hospital, but further details on his condition were not immediately available. East Orange is a few miles northwest of Newark.

The spokeswoman said the gun belonged to the boy's mother. It was not immediately known how the child got the gun.

No charges have been filed so far. City police and investigators with Essex County's Major Crimes Task Force are investigating the shooting.

The names of the mother and her sons have not been released.

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Information from: NJ.com, http://www.nj.com