Meet Miles Cooper (above), the Cambridgeshire schoolkeeper arrested on suspicion of being behind a series of letterbombs that has left nine injured.
"A neighbour, Keith Bailey, 65, said Mr Cooper was 'the last person in the world I would have thought would be arrested over something like this.'
"He added: 'Mostly all we do is say hello. That's about all you ever get from Miles, he is a very quiet sort of boy.'
"Sources described the arrest as 'very significant' and confirmed that it was in connection with the whole series of bombs."