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National MP Sam Uffindell has been stood down from the party's caucus while an investigation is carried out into further allegations of bullying raised by RNZ.
A woman who flatted with the Tauranga MP at university in 2003 has told RNZ's Morning Report Uffindell was an aggressive bully who once pounded on her bedroom door, screaming obscenities, until she fled through her window.
In a statement issued late Tuesday night, Uffindell denied claims he engaged in "intimidatory or bullying" behaviour, but said there was a falling-out between flatmates.
The allegations follow revelations that Uffindell, as a teenager, beat up a younger boy at Auckland's prestigious King's College boarding school and was asked to leave.
National Party leader Christopher Luxon spoke to Guyon Espiner.