Excellent update Andrey
According to Keskinen/Stenman in Suomen Ilmavoimat 1942, it was a huge effort by the Finns.
Nine Do 17 Z from LLv 46 were the first over the target (no losses) followed by
initially three Blenheims,
from LLv 42, one lost at 04.58H (BL-154)
They were followed by four more Blenheims from the same unit which lost two at 05.02H (BL-157 and -159)
There is no report of any German involvement in the book.
The suspicion that the bombs were the reason came from one aircraft (BL-109) which returned with a
faulty bomb where the bomb rack was broken and the plug of the trigger bar was off.
However just as Mattis said the final conclusion was that this could not have caused the bombs
to explode prematurely and very heavy defensive AA-fire was most likely the cause.
The Finns suffered no more losses that day.
Sorry I didn't look inside that book until today. We have one room getting new wallpaper and
a freshly painted ceiling so I have great difficulty in reaching any books right now....
B Rgds
Stig