DANS, GDBOP and the Prosecutor's Office are conducting an action in Vratsa and villages in the region against the spread of anti-democratic and fascist ideology, bTV has learned.
According to initial information, this is a group engaged in hacking.
A 20-year-old man has been detained in Vratsa.
Searches are also being conducted in the Vratsa village of Bardarski Geran, where three people are suspected.
It is being clarified whether there is a connection with the crashes of state institution websites last week.