Senator Pauline Hanson has said that radical Islamic preachers spreading hate speech should have been 'rounded up' and charged years before the Bondi Beach attack.

Our One Nation leader delivered the remarks while visiting Bondi Pavilion on Tuesday, where she was warmly surrounded by mourners who had gathered amid a growing sea of floral tributes for the 15 victims of Sunday evening's massacre. 'I would have them rounded up,' she said.