 Hundreds of thousands of civilians who were unregistered with the city authorities and lived in the city before the war, or had become refugees there, perished during the siege with no record at all.About half a million people, both military and civilians, from Latvia, Estonia, Pskov and Novgorod, fled from the advancing Nazis and came to Leningrad at the beginning of the war.The flow of refugees to the city stopped with the beginning of the siege.