Yep, NZ media are reporting on this, but he seems to be OK:
QuoteFormer Deep Purple bassist Glenn Hughes will be assessed by doctors in Christchurch this morning after being forced to cut short the opening night of his New Zealand tour due to what witnesses called "some sort of a medical event".
Hughes was an hour and 45 minutes into a scheduled two-hour show at Horncastle Arena on Tuesday night when he had to leave the stage.
His tour publicist, Sandra Roberts, said she had spoken to promoter Simone Williams of promoters Liberty Stage who described Hughes as "comfortable and resting" and receiving treatment.