Tragedy at the Love Parade - DW-TV correspondent Christian Feld live in Duisburg

We cross live now correspondent Christian Feld, who is covering the events in Duisburg Christian - are there any more details yet as to how this happened ? what more can you tell us about the reactions of police and security ? What about the investigation and how that is proceeding? What about the mood in Duisberg - othe day after. This is a terrible tragedy isn't?