BBC reports that Lostprophets’ lead singer Ian Watkins pleaded guilty to a long list of sex offenses, including three counts of sexual assault involving children, six counts involving child pornography, and one count involving animal pornography. The prosecutor in the case said that Watkins “accepts he is a determined and committed pedophile.”

Chief inspector Peter Doyle called the case “the most shocking and harrowing child abuse evidence I have ever seen. There is no doubt in my mind that Ian Watkins exploited his celebrity status in order to abuse young children.”

Charges against Watkins and two female co-defendants were filed late last year. According to the prosecutor, “both women sexually abused their own children and made them available to Watkins for him to abuse.”

Authorities gathered evidence from Watkins’ computers, laptops, and cellphone that contained footage of abuse that the singer had filmed. The evidence included a video that showed Watkins performing a sex act on an 11-month-old baby, videos that showed the singer engaging in sex acts with two different 16-year-old fans, and numerous indecent photographs of children.

Wales Online reports that text messages between Watkins and one of the women were found saying that Watkins wanted “to cross the line.” She responded with, “A summer of incest and child porn” and he replied, “Hell yes baby,” and added: “The sooner we start training her the better.”

During their searches, the police also found meth, cocaine, and GHB which played “a significant part in his offending against children.” According to NME, Watkins had plans to “teach” the babies how to take drugs and “planned to intoxicate one of his victims by blowing crystal-meth smoke into the child’s face at a Cardiff hotel.”

Prior to pleading guilty today, Watkins said that “he was a victim of a malicious campaign” and denied the allegations.

In October, the rest of the members of the band announced on Facebook that they would “no longer continue making or performing music together as Lostprophets.” Following Watkins’ admission earlier today, lead guitarist Lee Gaze tweeted: “That was over quick. Thank fuck. […] At least there is closure now.”

The chief inspector said that investigations will continue and that they “will work tirelessly to identify any other victims or witnesses and seek the justice they deserve.”

Watkins and the two co-defendants will be sentenced on December 18.