Forbes reports that Stockholm police raided the company yesterday. The process brought about technical issues for PQR, which shut down its own website and a swathe of torrent sites like Pirate Bay, but the police also seized a number of servers.
It's currently not clear which servers were taken. There're certainly plenty to choose from: among PQR's 2,000-or-so customers are WikiLeaks, the North America Man-Boy Love Association, the Chechen rebel site Kavkaz Central, and the defamation-accused Italian blog known as Perugia Shock.
PQR was founded by Pirate Bay members back in 2004, and has been raided by police twice before: in 2006 to gain evidence about Pirate Bay and 2010 during a more general file sharing investigation. The nature of the PQR business—a no-questions-asked set-up where clients often remain anonymous—means that even it doesn't know why the raid happened yet. More here.