A fifth person was charged in the case of an 11-year-old girl who authorities say had sex with as many as 20 people as a 16-year-old girl coached her.

The boy was charged in juvenile court with being a party to sexual assault of a child. He admitted that the girl performed oral sex on him during a Labor Day party, according to court documents filed Monday.

The 16-year-old girl and a 15-year-old boy already face similar charges.

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Freeman Gurley, 40, the 16-year-old's uncle, and Darnell Chaney, 17, were also charged with two counts of first-degree sexual assault of a child.

Nine people have been arrested in the case, police said Wednesday. Police are also looking for three more suspects, two adults and a juvenile, Capt. David Zibolski said.

Also Tuesday, the girl's grandmother appeared in Milwaukee County Children's Court on Tuesday to determine whether the state needs to put the girl in foster care. The results of the hearing were sealed.

Alderman Mike McGee attended the hearing but wouldn't disclose the outcome.

McGee said the girl, who has had HIV since she was born, was doing better Tuesday and has received many gifts from the community, "to help get her mind on something constructive."