Luftwaffe losses over Britain 4th/5th July 1941.

[APOLLO118]

Hi, Researching my relative who was killed whilst on a Night time exercise Night of 4th July - Very early hours 02.45 hrs of 5th July 1941 Crashed only a few miles from 10 O.T.U. R.A.F. Abingdon, Plane was a Whitley Mk v Bomber Z6667 From 10 O.T.U. Abingdon, Official reports say it broke up in flight and crashed but I Was always told it was shot down and through investigations and accounts from a Canadian whom new a crewmember on that flight states it was a German "Sneak raider" [Intruder?].
I Would like to have oppinions on who might have shot the Whitley down?

I Have a possible match for this but would welcome any thoughts, Another possibility is that the Sneak Raider/Intruder was then shot down failling to return home thus no kill was recorded ! Many thanks, Ian.