That does not accurately represent what EMA have stated.
On March 10 EMA released a press-release
https://www.ema.europa.eu/en/news/co...h-used-austria indicating that there were no indication that the vaccine caused this side-effect; but they are still investigating it.
The three cases of health-care workers in Norway were reported on March 11, and they stated that EMA was going to investigate. (Ehmm.. Yes, it seems that Norway is partnered with EMA even though they are not part of EU.)
It may be something unrelated, it may be a bad batch, or it may be something related to vaccination, but not to the vaccine itself - e.g. problems with the new syringes.
It could, of course, also be sabotage.
What is more confusing is that there are now reports that a vaccinated person died of this in both Denmark (60-year old) and Norway (50 year old); I tried to see if the local news reported that:
Yes for Norway:
https://www.nrk.no/norge/innlagt-hel...nen-1.15418283
Less clear for Denmark.
Basically there's a real issue and also people trying to turn it into a political battle-field where facts don't matter; but only whether you are for or against the uk. (Both sides conveniently ignoring the fact that half of AstraZeneca is in EU and that the production of these batches were in the EU.)
In general finding issues with vaccines is problematic. The 2009 influenza vaccination caused narcolepsy among some young people in Finland and Sweden; and some are still arguing why - and there is no clear answer.