This is the first time that a new law banning separatist incitement has been used. The law was introduced in 2014 after the civil war in Ukraine broke out.

According to media reports, 26- year-old Igor Sychev, the blogger, has denied allegations that he was fomenting separatist feelings.

But this is an issue that the Kazakh authorities, up to President Nursultan Nazarbayev, are touchy about.

The north and east of Kazakhstan are populated mainly by ethnic Russians.

This population skew was one of the main reasons Mr Nazarbayev relocated his capital to Astana, in the centre of the country, from Almaty in the south in 1997 and he has spent much time re-working the history of the Kazakh state to be as inclusive as possible — without stretching the realms of possibility too much.

Nationalists in Russia have also increased tension by floating the idea of bringing north Kazakhstan into a Greater Russia.

On a trip to Pavlodar in the north of the country last year, though, it was clear to a Bulletin correspondent that for most ethnic Russians living in Kazakhstan, although their cultural centre of gravity may lie to the north in Russia, they still have faith in the Kazakh state.