Australian Prime Minister Malcolm Turnbull has ordered an investigation into the treatment of children in detention after the Australian Broadcasting Corporation (ABC) aired footage it obtained showing abuses by guards. Interviewed on ABC radio Tuesday, Turnbull said he was “deeply shocked — shocked and appalled by the images of mistreatment of children,” Reuters reports. He is setting up a royal commission to investigate how the incidents caught on security cameras came to happen, Turnbull said, adding “We’re going to move swiftly and decisively to get to the bottom of this.” ABC’s Four Corners program on Monday, entitled “Australia’s Shame,” broadcast CCTV footage from Don Dale Youth Detention Centre in Darwin, in the country’s Northern Territory, shot between 2010 and 2014.