Iran’s Islamic Revolutionary Guard Corps has stopped using communication devices after the Hezbollah pager and walkie-talkie explosions last week, according to a Monday report. The day prior it claimed to have arrested 12 people it claimed had collaborated with Israel.

The elite branch of the Iranian armed forces has ordered all of its members to stop using any type of communication device after the blasts, Reuters reported, citing Iranian security officials. An effort is underway to inspect all devices, most of which are homemade or imported from China and Russia, according to the outlet.

Israel detonated thousands of walkie-talkies and pagers used by Hezbollah last week, leaving at least 42 dead and more than 3,000 injured. Israel had planned to detonate the pagers during a full-scale war with the group, but it was forced to act sooner after learning that two members of the group had learned the devices were compromised, Al-Monitor reported on Sept. 17.

On Sunday, the IRGC said they "arrested 12 members of a network affiliated with the Zionist regime who were planning acts of sabotage in Iran,” the affiliated Tasnim news agency reported. The IRGC said the group had planned to commit “anti-security measures” with the goal of stirring up a crisis in Iran, though they did not provide further details.