Collision of 2 Do 17E`s on 1.9.1939 and WaSt

[Marius]

Hello,

In the morning of 1.9.1939 the 7./KG 77 lost 2 Do 17E`s which collided near Olkusz.

Does somebody know what cause is given in the German WaSt documents?

The following crews were killed:
Uffz. Oskar Finke,
Uffz. Kurt Klose,
Gefr. Wilhelm Jannsen,
Ofw. Hans Pitsch,
Uffz. Georg Reindl,
Uffz. Josef Ruess.

Can somebody help?

Regards,
Marius