Former Lostprophets frontman Ian Watkins has been found guilty of possessing a mobile phone while in prison.
The 42-year-old disgraced child sex offender from Pontypridd hid a mobile phone inside his anus so prison officers wouldn't find it and prevent him from seeing his mum, who was visiting from Wales.
The phone was found on Watkins in HMP Wakefield, West Yorkshire, where he is serving a sentence for sex offences.
Watkins was wearing a blue denim jacket with a white trimmed collar and had his dark hair in a ponytail as he sat in the dock while the verdict was returned at Leeds Crown Court.
Watkins was sentenced to 10 months in prison to be served consecutively to his current sentence.
Judge Rodney Jameson QC said: "I am very conscious of the fact you are serving a very long time and you will be well into middle age by the time you are released.
"The fact of the matter is if there is not an appreciable penalty for having had a mobile phone in these circumstances then of course you would draw from that the lesson you could have another one and that is not a position I would want to encourage."
He said the sentence would delay by five months the time when Watkins was eligible to apply for parole.
Watkins was jailed in 2013 for after admitting 13 sex offences which a judge said "plumbed new depths of depravity", including the attempted rape of a baby.
He was given an extended sentence which included a 29-year prison term followed by an additional six years on licence.
The disgraced rock star spoke with a female fan from prison the day after admitting two counts of attempted baby rape and said he was going to issue a statement saying it had all been "mega lolz".
During the five-day trial, the court heard how officials at HMP Wakefield removed Watkins from his cell after being told he was illegally storing a phone. in March 2018, a woman said she thought he had been talking to her on a banned mobile.
Nothing was recovered from Watkins' person when he was strip searched inside a separate sterilised cell. The former rockstar then asked a prison officer if he would be allowed to see his mum, who was due to see visit that same day, if he gave up the phone.
He then reached into his underwear and produced a small three inch long white GTSTAR model mobile phone.
Watkins had denied the charge, saying two inmates forced him to hold on to the device so they could contact women who have sent him fan mail in order to use them as a "revenue stream".
In his evidence, the defendant - who jurors have been told is serving a sentence for sex offences - refused to name the men, but described them as "murderers and handy", adding: "You would not want to mess with them."
Stephen Wood, prosecuting, said the phone, a small GT-Star, had been used to contact a woman named Gabriella Persson, who jurors were told had been in a relationship with Watkins but stopped contacting him in 2012.
The prosecutor said that she resumed talking to him in 2016 through letters, phone calls and via legitimate prison emails.
Ms Persson told jurors how she received a text in March 2018 from a number she did not recognise which just said: "Hi Gabriella-ella,-ella-eh-eh-eh".
She said that the message, a reference to the hit Rihanna song Umbrella, made her think that Watkins was contacting her and she then phoned the number to confirm he was.
Mr Wood said that it was she who reported the defendant's use of the phone and that the prosecution reject the contention that Watkins had been forced to keep and use it in March 2018.
The court heard Watkins received "hundreds and hundreds of pages of letters" from women while in prison.
He said that those who he is currently locked up with are "murderers, mass murderers, rapists, paedophiles, serial killers - the worst of the worst".
