An MP in Christchurch wants allegations against a construction manager who worked on the Canterbury Television building to be considered by a Royal Commission.
The Press newspaper has published stories saying former CTV construction manager Gerald Shirtcliff stole the identity of an engineer named William Fisher and faked an engineering degree.
The multi-storey CTV building in Christchurch collapsed in the February 2011 earthquake, killing 115 people.
In August, Mr Shirtcliff gave evidence via video link from Brisbane to the Canterbury Earthquakes Royal Commission, which is investigating the collapse.
He confirmed he lives under the name William Fisher in Australia and had been extradited from Australia for a GST fraud trial, and was convicted.
Christchurch-based Labour list MP Clayton Cosgrove says if allegations that he stole an identity are correct, that should also be considered by the inquiry.
The Royal Commission has said the hearing into the performance of the CTV building is complete and will not be reopened.
In Australia, the professional engineers body is urgently investigating the registration of a William Anthony Fisher.
Engineers Australia says the organisation was investigating before the report in The Press but would not say who or what triggered the inquiry.
The organisation says it is taking the allegations very seriously and will refer the matter to the police if it considers a crime has been committed.