BlackBerry said in a statement: "A serious incident occurred at our BlackBerry event. Our first concern is the wellbeing of the injured guest.
"We are doing all we can to assist police with their inquiries and are unable to provide further comment at this time."
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He said in a statement there had been a ‘misjudgement which I regret’.
Bamber, now 58, has always maintained his innocence.
Whirlpool is to recall the extra machines after finding problems in three more models, adding to a recall of more than half a million units.