Five occupants on board a medical helicopter are being treated for minor injuries after their chopper crashed near County Road 234 near Interstate 55 in Perry County. The chopper was heading to St. Louis Children's Hospital.

Troopers with the Missouri Highway Patrol say four crew members and one child were on the helicopter when it went down around 9 p.m. Saturday.

Three crew members were released from the hospital on Sunday.

The Federal Aviation Administration officials will investigate the cause of the crash.