A nine-year-old girl is dead after she was accidentally shot by her brother, police in the US city of Milwaukee say.

The girl was shot inside a home on Milwaukee's north side on Saturday. Police say the brother is a minor and was taken to Milwaukee County Children's Court Center.

#BREAKING: Police say the 9-year-old Milwaukee girl killed in a shooting yesterday was accidentally shot by her brother. Both of their parents are now in police custody: https://t.co/3xKGDHBIbs

— TODAY'S TMJ4 (@tmj4) March 11, 2018

Police say the girl's parents, a 29-year-old Milwaukee woman and a 32-year-old Milwaukee man, were arrested on multiple charges.

Police will present the case to the Milwaukee County district attorney's office in the coming days.

AAP