Turkey coup accused 'traced via messaging app'

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Thousands of people accused of taking part in an attempted coup have been traced via a messaging app, a senior Turkish official has told Reuters.

Having been cracked by the authorities, ByLock had been abandoned by members of the dissident Gulen movement before the coup attempt, the news agency heard.

But some 40,000 undercover operatives, including 600 ranking military personnel, had already been identified.