Lost He111 from Norway of 1941

[OakTree]

This is from a friend that need some help.

Hello all!
I am trying to track a loss of a Heinkel 111 from Norway in the spring (18 or 19th of march) of 1941.
The aircraft belonged to either KG 26 or 1.(F) 123 (Fernaufklarungsgruppe).
The word is that the aircraft was damaged by flak over Reykjavik Iceland and had to belly land some distance away. The crew escaped the country.
Here it becomes interesting. Captain is supposed to be Alexander Holle, a person of quite some renown. One of the passangers is thought to have been none less than Wilhelm Canaris, the head of the Abwehr!
Holle apparently had a He111 at his disposal, but lots about this deal seems to have been hushed down. Actually more, for I have yet to find a documented LW loss in Iceland, while there were several! (My next door neighbour has a piece from a FW Condor engine in the kitchen, just as an example, and my mother witnessed a chase where US fighters chased a German bomber to the sea. Much more around)
Anyway, I am trying to trace the loss, and find out more about Holle. It was a recce mission, as so many were, and Holle later had his fingers in the air raids on convoy PQ-17 that actually left from Iceland for Murmansk.
BTW, they are supposed to have flown from Sola airfield.
Anyone there from Norway that could lend a hand?