No, but there was a search warrant issued for any hardware he may have used in the whole BTC operation (a copy of which is now published on bitcoin-24.com, BTW) and people just went on to assume 1. that it had already been executed and 2. that it involved seizing the machine formerly running the bitcoin-24.com trading engine and/or holding the BTC wallets, but I don't think there's any proof that these steps have been taken. The website itself has never been offline through all this AFAIK and obviously he still has control over what to publish on it, so at the very least his webhosting service has not been affected by the search warrant.