Analysis of information sources in references of the Wikipedia article "Belgorodi oblast" in Estonian language version.
According to the document, at least four bombs fell on the city of Belgorod itself, a regional hub with a population of about 400,000 people. An additional seven were found in the surrounding suburbs. The most, 11, fell in the Graivoron border region where some could not be recovered because of the “difficult operational situation.”
