WATCH: Daycare worker pushes a 4-year-old down the stairs

WARNING: The following video contains graphic images. Viewer discretion is advised.

The video is disturbing.

Caught last week on a surveilance camera, a woman seen allegedly pushing a child down the stairs.

The 52-year-old woman has been charged with simple assault, harassment and endangering the welfare of a child.

According to authorities, the child suffered a minor knee injury but was back at the daycare on Monday.

It's unclear why the woman felt the need to allegedly push the child.