This breaking story has been getting Westminster excited this evening. It started as a rumour that SOMETHING had happened and then resolved itself to the story that has appeared best in the Telegraph.
It appears that Mr Green has been arrested on suspicion of being involved with the leaking of sensitive documents from the Home Office - he is Shadow Immigration Minister and has embarrassed the Government recently with revelations. It is suspected that he is somehow linked to the civil servant arrested about 10 days ago - the assumption being leaker and leakee.
The Conservatives will claim that if Mr Green is simply raising matters of public concern - particularly matters that the Government was seeking to hide or inappropriate behaviour by the Home Office - then this is his job. And, with a few caveats, I agree. Providing it is not damaging national security and on the assumption that he was not paying whoever leaked the documents or extorting them in some way (and absolutely no suggestion of this has come to my ears) then so be it. It is the job of the opposition to raise questions about Government policy - particularly any malfeasance.