The largest group of foreigners, about two million, are ethnic Turks.
In 2008, a fire broke out in a building where many ethnic Turks lived.
Ethnic Turks make up between 70% to 75% of Turkey's population.
The municipality is mainly populated by ethnic Turks, which are more than 99% of the total population.
Some of the refugees, ethnic Turks, talked through the bus windows and said they were going willingly.
According to members of the Turkish minority, it was the first time ethnic Turks had taken to the streets.
The area in northeastern Bulgaria is home to many of the 900,000 ethnic Turks.
Ethnic Turks are the majority in Turkey, numbering 55.5 to 60 million.
The soldiers had invaded the town, which is populated mostly by ethnic Turks, to flush out foreign fighters, military officials said.
During 1980s the movement included and cooperated with other ethnic groups, including ethnic Turks, who were following the radical left.