Bulgaria arrested 280 people in a national joint operation by the Interior Ministry and State Agency for National Security on November 15 against illegal migration, the ministry said.
Police arrested 11 people allegedly involved in people-trafficking.
Ten people who had been the subject of nationwide search orders also were taken into custody, the Interior Ministry said.
The joint operation began early in the morning in nine Bulgarian cities on the orders of Interior Ministry chief secretary Georgi Kostov.
The ministry said that 620 places, 7114 people and 3231 vehicles were checked in the course of the operation.
Eight criminal proceedings had been initiated, the ministry said.
In recent months, Bulgarian police have conducted a series of operations against illegal migration, regularly in Sofia but also in other cities and towns, detaining hundreds of people.
(Photo: Bart Groenhuizen/sxc.hu)