An Afghan migrant was shot dead October 15 in a scuffle between Bulgarian border authorities and a group of migrants believed to be from Afghanistan, Bulgarian government authorities said.
A fight and exchange of gunfire broke out after border authorities tried to seize around 40 illegal immigrants who had crossed the border from Turkey.
All of the migrants were men, some of them armed, authorities said. The migrant who was shot died on his way to the hospital. An investigation is under way.
Bulgarian Prime Minister Boyko Borissov was informed of the incident while in Brussels at a European Union summit focused on Europe's migration crisis. He left the talks early.
"Prime Minister Borissov informed me just before he left and, for me, it's the next argument [for] how important our discussion was tonight," EU President Donald Tusk said.
"The protection of our external borders is the main priority today, and of course Mr. Borissov is absolutely aware that we are ready to help them."