The FBI executed 40 search warrants for “anonymous” hackers who took down corporate websites in a display of support for WikiLeaks, the bureau reported Thursday. A loose international coalition of hackers calling itself "Anonymous" attacked the websites of Paypal, MasterCard and Visa last year after the companies severed ties with the secret-spilling Julian Assange. Law enforcement officials in France, Germany and the Netherlands are also pursuing the hackers. On Thursday, British officials issued search warrants and arrested five people aged 15 to 26 and accused them of participating in what the hackers called "Operation Payback." The FBI didn’t announce whether any arrests had been made in connection with the searches.