The Green Party leader says errors like Robert Troy's 'cannot be tolerated' and are damaging trust in the political system.
Eamon Ryan believes it would be 'appropriate' for the Oireachtas committee on parliamentary privileges and oversight to carry out an investigation into Robert Troy's property portfolio.
Minister Ryan also believes the watchdog SIPO should also look into Junior Minister Troy's failure to declare the full details of his private interests into the Oireachtas register.
The Fianna Fáil TD yesterday apologised for his errors and insisted he was 'very happy' to address the Dáil next month.
Transport Minister Eamon Ryan - one of the coalition party leaders - says the legislation is clear:
''I think it was very disappointing that his error failure to properly declare and register his property interests, that undermines confidence in the political system. We all recognise that and it can't be tolerated. We have to make sure that we live up to the legislation. The Act was introduced in 1995. The ethics act is really clear in terms of the responsibility of all office holders, particularly to declare all their interests.''
Aontu leader Peadar Toibin says an investigation isn't needed because Fianna Fail should take action straight away.
''It should be clear enough to individual political parties that there is a problem there and they should demand accountability. Anyways, whatever about the investigation, I think there's a reluctance in some of the government's parties and some of the opposition parties to call for the resignation of Robert Troy because if they do, it may reflect on other TDs who haven't fulfilled their responsibilities in those parties.''
Junior Minister Robert Troy has denied claims planning wasn't sought for a development in County Dublin, and that a fire safety cert wasn't obtained for the same property.
The allegations, published by On the Ditch, relate to a property on the Rathdown Road, in Phibsboro.
However, in a statement this afternoon, Mr Troy has said advice was sought from an architect engineer on it.
The Junior Minister says an application for a fire safety cert wasn't needed as there was no 'material change' during renovations.
He's also confirmed Dublin City Council advised no planning was required for the wider works, but planning was obtained for a fire escape that was built alongside it.
