VERNE G. KOPYTOFF New York Times Wednesday, June 22, 2011 The F.B.I. seized Web servers in a raid on a data center early Tuesday, causing several Web sites, including those run by the New York publisher Curbed Network, to go offline. The raid happened at 1:15 a.m. at a hosting facility in Reston, Va., used by DigitalOne, which is based in Switzerland, the company said. The F.B.I. did not immediately respond to a request for comment on the raid. In an e-mail to one of its clients on Tuesday afternoon, a DigitalOne employee, Sergej Ostroumow, said: “This problem is caused by the F.B.I., not our company. In the night F.B.I. has taken 3 enclosures with equipment plugged into them, possibly including your server — we can not check it.” Mr. Ostroumow said that the F.B.I. was only interested in one of the company’s clients but had taken servers used by “tens of clients.” He wrote: “After F.B.I.’s unprofessional ‘work’ we can not restart our own servers, that’s why our website is offline and support doesn’t work.” The company’s staff had been working to solve the problem for the previous 15 hours, he said.