Speaking to the FBI this morning, Kotaku confirmed there have been no arrests in the U.S.
The story, which seemed to first pop up on website Gamesthirst, claims that the FBI are looking into the case, issues 40 arrest warrants for members of Anonymous in America and that some members of the hactivist group were already arrested in the UK.
The story bears a striking resemblance to a press release sent out by the FBI in January about their investigation into Anonymous, spurred by the group's distributed denial of service attacks on U.S. companies.
That release begins:
"FBI agents today executed more than 40 search warrants throughout the United States as part of an ongoing investigation into recent coordinated cyber attacks against major companies and organizations. Also today, the United Kingdom's Metropolitan Police Service executed additional search warrants and arrested five people for their alleged role in the attacks."
In that case, Anonymous publicly claimed responsibility for the attack. While Anonymous initially called for an attack on Sony, they've since said they were not responsible for the outage. Of course, the leaderless structure of the group could mean that an off-shoot of the group is responsible.