"Bangladesh Says It Now Knows Who’s Killing the Bloggers"

NYT:

At least 39 people have been killed in attacks with machetes, guns and bombs since February 2013. The killings, mostly with machete blows to the back of the victim’s neck, have been accelerating lately,

...

The Bangladeshi authorities say that they now believe they have identified the top leadership of the two groups they say are responsible, and that they are preparing to round them up. Only when the leaders are caught, they caution, will the attacks be stopped, and at that, only for a while if the appeal of Islamic fundamentalism is not blunted.