Hello Rene,
yes, once again our interests are closer
Most probably one of these four Lancasters bombed one city in Bohemia. There is a local Police Report which says that it could be one of bombers from second wave (dropped incendiaries (Stabbrandbomben) 1.45 o´clock morning). If you have interest, you can contact me by e-mail. I believe you have got my e-mail. Unfortunatelly, I have lost your one.
Best
Michal