"We've also asked Oranga Tamariki officials, as well as the independent ministerial advisory board, to be on site to get to the bottom of things."
The whistle-blower who gave the footage to Newsroom on the condition of anonymity, said he feared the consequences of Oranga Tamariki finding out what he did. But Davis says he appreciated the staffer coming forward.
"Just in terms of the whistle-blower, look I support anybody who raises issues around bad practice and Oranga Tamariki needs to make sure that they have a robust system to make sure that any reports of bad practice are acted on," Davis said.