At least 74 on-duty soldiers have been arrested across Turkey as part of a probe into the Gülenist Terror Group (FETÖ), the group behind the 2016 coup attempt, judicial sources announced on Friday.

The arrests come after the Istanbul Public Prosecutor's Office issued arrest warrants for 103 active soldiers, including colonels, lieutenant colonels and commanders, according to sources who spoke on condition of anonymity.

Police conducted simultaneous operations in 32 provinces, including Istanbul, to nab the suspects that were accused of communicating with other suspected FETÖ members over pay phones and landline telephones. The search for a number of other suspects is still underway.