A 62-year-old man has been arrested on suspicion of sending offensive Twitter messages about murdered toddler James Bulger.
The man, from Bexhill, Surrey, was arrested after Twitter users reported an account called 'James Bulger's Ghost' that displayed a picture of the two-year-old and an image of the child's gravestone.
James' mother Denise Fergus was contacted directly in one offensive message sent from the account on the anniversary of her son's death.
She highlighted the messages to her own 23,000 Twitter followers.
The man was interviewed by police and bailed until 28 August.
James Baines, who tweeted images purporting to be of James Bulger's killer Jon Venables as an adult, has received a 14-month suspended jail sentence for contempt of court at the High Court.
One of James Bulger's killers is reported to have been released from jail for a second time.
Jon Venables, 31, was freed from prison after being locked up in 2010 for downloading images of child abuse, The Sun said.
Venables had previously served eight years for murdering two-year-old James in Liverpool in 1993.
The toddler's mother, Denise Fergus, told the newspaper Venables is "a danger to the public".
This has been updated to say that Jon Venables has been released from prison twice, not four times.
The mother of murdered toddler James Bulger has been targeted by what her husband called a "troll" on Twitter.
Denise Fergus said she could not believe the message which apparently blamed her for her son's death in 1993.
Mrs Fergus tweeted:
Cant believe that some1 on here is still blamin me 4 my sons murder it took me a long time 2 stop blamin myself thanx 4 ruinin my evenin
The offending tweet appears to have been deleted but the Daily Mirror reported it said: "(Denise) was to blame. She let go of James' hand."
Her husband Stuart told the paper: "It affected Denise. Twitter have got to act against trolls. They face no consequences. It's gutless."
The mother of murdered toddler James Bulger said she feels like she has let her son down after learning one of his killers will be released.
In an interview with Channel 5 News, Denise Fergus said: "I just can't believe how I'm getting treated and I don't know why they're treating me like this."
Venables has been granted parole again. Last time, he was sent back to jail for distributing indecent images of children.Read the full story ›
The father of James Bulger says the decision to release one of his son's killers from prison "filled him with terror". Speaking through his solicitor, Robin Makin, he added:
"Ralph fears that an innocent person may be mistaken for Jon Venables and be injured or even killed. If such occurs then Ralph will feel guilty of not having done enough to have prevented such an obvious tragedy."
This is how events unfolded from the abduction of James Bulger to the conviction of his schoolboy killers, Jon Venables and Robert Thompson.Read the full story ›
Ralph Bulger and the paternal family of James Bulger are disappointed and dismayed to have been advised that the Parole Board have decide to release Jon Venables back into society.
In 2011 the Parole Board determined that it was 'not safe' for Jon Venables to be released. It is not known what has changed. No reasons for the decision have been given.
For Ralph and his family the living nightmare continues and is exacerbated by the problems now created by the reckless decision to free Jon Venables without any publicly disclosed safeguards.
Jon Venables is a sex offender who has murdered once and made it clear when posing as the mother of a child that an 'ultimate thrill' for him was the sexual abuse of a child.
The authorities have already experimented with Jon Venables living a lie and it did not work.
In a short statement the Parole Board said: "We've had confirmation that all parties have been told and we can confirm that it was a release decision. He will be released."