Back in their old positions, some FBI agents are returning who had been removed from their duties to work in the field of immigration as concern for possible terrorist attacks related to Iran is constantly increasing, as four people with NBC News told him.

Don Holstend, Assistant Director of the FBI anti -terrorism department, issued instructions on the weekend for the redistribution of agents working on anti -terrorism, spy and cyber security, but had been detached in post -immigration posts.

All four sources reported that this move was related to the possibility of Iranian retaliation for the recent US military attack. NBC News said Iran threatened US officials that it could launch the so -called “inert nuclei” within the United States.

Many current and former agents had been concerned for months about new demands that would help the Ministry of Homeland Security identify illegal immigrants. This change, as they had said, caught their attention from critical threats to national security.

“I suppose they realize that all this issue of national security is important, after all,” said one sources.