A Sheffield man has been released on police bail after being questioned in connection with comments posted to the activist news website Indymedia, which included the personal details of a prominent High Court judge.
The man, in his 40s and thought to work as a systems administrator, was arrested on Monday and questioned for about eight hours. He has been bailed without charge to appear at a police station in May. His home was searched and computer equipment and paperwork seized.
The comments at the centre of the investigation were critical of Mr Justice Neil Butterfield for the landmark blackmail sentences he handed down to seven animal rights extremists last month. One posting encouraged other Indymedia users to use the personal information to contact Butterfield and "to let this friend of [animal testing firm Huntingdon Life Sciences] know exactly what you think about him".
Indymedia administrators deleted the personal information soon after it was posted, but they were contacted by Kent Police the following day requesting the IP addresses of the posters. The Kent force carried out the original investigation that resulted in the blackmail sentences handed down by Butterfield.
Indymedia told Kent Police it does not record IP addresses. The same day the force seized a server belonging to Indymedia and hosted at Manchester-based colocation provider UK Grid.