A former 'Supernanny' blew the whistle on a Gwinnett County father, according to TMZ.

Ex-‘Supernanny’ Jo Frost, the star of Atlanta-based UP television show “Jo Frost: Nanny On Tour,” reported a Gwinnett County father to Division of Family and Children Services after video cameras captured him disciplining his son, TMZ reports.

Frost visited the Spivey family in October, after the parents contacted the show about their kids’ behavior. Sources connected to production said the family contacted the show because the three children don’t respect mother, only the father.

After Frost’s visit, video cameras were placed throughout the home so the nanny could analyze family interactions.

Video captured the father repeatedly telling his visibly frightened 9-year-old son to “come here.” Spivey then asks the boy why he had taken his charger, and orders him upstairs to his room.

The video shows the child wailing as he walks up the stairs. The father is seen removing his belt before heading upstairs behind the boy.

Once at the top of the stairs, the boy reluctantly goes into his bedroom, as he is followed by his father. Muffled cries are heard coming from the boy’s bedroom.

Frost later saw the footage, when she followed up with the family, and reported the incident to DFCS.

The family admitted that they were investigated, but said no charges were filed, according to TMZ.

The father denied hitting his son that day. He said he hit his bed and that his son was crying because he was frightened.

Frost, who says she is against corporal punishment, tweeted about the issue when the episode aired on Thursday.