On 5 May 1945, a barge carrying 345 inmates of Stutthof Concentration Camp who had left the camp on 25 April 1945 entered the fishing port of Klintholm on the island of Mon. Among them were 189 Poles. The barge was intercepted by a detachment of the Danish resistance movement, which led to the release of the prisoners. A relief operation for the survivors was organised by the Danish Red Cross. A makeshift hospital was set up in a local hotel, where the sick, emaciated and those infected with spotted fever were sent for treatment and convalescence. However, despite the care, 21 prisoners died. In the village of Magleby, 5 dead prisoners were buried in a common grave: 3 Polish and 2 Soviet. There is a stone on the grave with an inscription in Polish: "Here rest the martyred in the camp concentr. Stutthof, Poles and Russians. / Ś.P. / Maria Makowska / Czesław Kowalczyk / Stanisław Bednarski / Zina Buzowa / Hasan Hasanow / Honour their memory / year 1945". Obelisks with five-pointed stars have been placed on either side of the stone.