Twenty-eight German schoolchildren who were on a school trip in Nice are still unaccounted for following Thursday's terrorist attack.
Pupils from Berlin's Paula-Fuerst school were on a week-long trip to the southern French city when a gunman drove at high-speed into a crowd of people celebrating Bastille Day.
Reports in German media suggest at least three German nationals have died in the atrocity.
An education official said the children's fate was unknown.
"All I can say is that a school class was in Nice - I can't give you any further information at this point because we have no further information yet.
"I ask for your understanding that we will of course inform the parents before we inform the media so that parents don't get their information from the media. I ask for your understanding. We are after all talking about school children here."