Sebastian Usher

Since then, there have been attacks, but not on that scale and not with that regularity.

They haven't given much of a breakdown of this operation, but it certainly was an extensive one in Istanbul, saying that police obtained information about these alleged planned attacks throughout the holiday season, saying that they were specifically going to be targeting non-Muslims and that more than 100 raids were carried out in various locations in Istanbul.

And there was a list of more than 130 IS suspects and saying that they detained almost all of those.

This is not unusual in Turkey.

They take these preventive measures regularly and often detain quite large numbers of suspects.

And it's been pretty successful.

I mean, if you go back about a decade in Turkey, there was a real threat from ISIS coming across the border from Syria and then from Iraq with what was going on with Islamic State then.

Since then, there have been attacks, but not on that scale and not with that regularity.

The BBC's Sebastian Usher reporting.

This was in Mashhad, and it was at a ceremony marking seven days since a human rights lawyer there was found dead in his office.

Now, officials say that he died of a heart attack, but activists say it might be something much more suspicious than that.

I don't want to fool investigation.

This was a lawyer who had acted for people like those who were at this event who have stood out against the Iranian regime.

regime, no one more so than Nagez Mohammadi herself, of course.

I mean, she was three on medical grounds.

She'd had some serious medical issues.

There was a concern that she might have cancer in her leg.

That, I think, has been resolved.

It was only meant to be three weeks at a time, but it's been pretty much a whole year since then.

But always, people around her were saying there's a good chance that she could be re-arrested.