The four children Çetin Mert, Cengaver Katrancı, Siegfried Kroboth and Giuseppe Savoca, who fell into the Spree at the Gröben riverside between the years 1972 and 1975, could not be rescued even though West Berlin rescue forces arrived quickly on site.
Empat anak, Çetin Mert, Cengaver Katrancı, Siegfried Kroboth dan Giuseppe Savoca, yang jatuh ke Spree di tepi sungai Gröben antara tahun 1972 dan 1975, tak diselamatkan meskipun pasukan penyelamat Berlin Barat datang dengan cepat ke TKP.