Hmmm - this story is a bit weird.......
I'd hold off on the terrorist angle until there is some confirmation - two terrorists of ME appearance..... if they're local they're easy to find - if not a lot of coppers will be looking at a lot of CCTV... but why go all the way to Marham??
I can think of several scenarios where someone might be attacked by persons he actually knew but didn't want to talk to close & personal - they might be from Wonga for example.....
and (unfortunately) there are a number of cases where incidents have been totally fabricated for one reason or another
interestingly it's disapeared off the main BBC websites.......