Associated Press | KRON 4 News

JANESVILLE, Wis. (AP) - Carbon monoxide seeping into a school volleyball team's bus has left three adults and six children overcome by fumes.

Three girls were flown to a Milwaukee hospital for treatment in an oxygen-rich chamber.

A fire official says the exhaust system apparently malfunctioned.

The team was traveling yesterday from suburban Chicago to a youth volleyball camp when the bus pulled over in southern Wisconsin. Medical teams found three or four people slipping in and out of consciousness.