Police in Varna have detained two 27-year-old men on suspicion of buying votes in a village in Dolni Chiflik municipality, Varna police said.
Investigators say the men called people over to their car and took their ID cards for €50.
Police got a tip on Wednesday that someone was buying votes from a car at a specific spot in the village.
Officers from the Economic Police went there and searched the car. They found 16 mobile phones, a laptop, six ID cards and €50 notes.
The arrests are part of a special operation against crimes against citizens' political rights.
Police have opened pre-trial proceedings and informed the prosecutor's office. The two men remain in custody.