"confessed on" is a correct and usable phrase in written English, and can generally be used when someone admits to something.
For example: She confessed on the stand that she had committed the crime.
All but one, Salaam, confessed on videotape to the crimes, and all five were convicted; they served from seven to thirteen years.
As one blogger confessed on his blog, he hopes others don't use the banner-ad blocking software he uses, the faster to bring him his Google dosh.
The case seemed strong: the other teenagers pointed to him as the one who lighted the match, and Mr. Malik confessed on video.
Alicia Keys even confessed on Instagram to enjoying his music.
(She recently confessed on air that she dreamed that her unborn child was a cat).
But, as he once confessed on Desert Island Discs, he would not have pressed the button.
Lady Gaga has tearfully confessed on film that she thinks "people are trying to destroy her".
The five confessed on videotape to the attack in 1989, and they were convicted at trial.
The three -- a Briton, a Canadian and a Belgian -- confessed on state-run television on Sunday.
Mr. Davis confessed on Sunday while being questioned by the Groton police, the police said.
"I have never enjoyed reading the accounts of these sufferings," he confessed on Thursday.
