It was a rush bag (already screened ex AMS) aboard a KLM flight.
Apparently there were worries over the fact that the bags contents weren't readily identifiable.
What bothers me is why security personnel at MAN found the bag to be of such concern after their colleagues at AMS had cleared it. As far as I'm aware all rush bags MUST be x-rayed prior to loading.
Are all rush bags now screened at both ends of their journey? If it makes a good degree of sense whilst there people with violent or criminal intent about. Nevertheless it caused complete chaos by all accounts.