Prime Minister Stephen Harper has asked the Conservative Party's national council to investigate new allegations against MP Eve Adams of improperly using constituents' private information in her bid to win a nomination in a newly formed riding.

Adams is seeking the party's nomination in Oakville North-Burlington, which is at the centre of a bitter battle that has cost Adams's fiancé, Dimitri Soudas, his job as the party's executive director.

Soudas was removed this week after a dramatic confrontation with senior party officials over using his position to advance Adams's bid for the nomination in the new riding.

The probe comes in response to a letter sent directly to the prime minister from the president of the riding association, which alleges Adams demanded to know how much money one person had donated to the party, and said she would use her access to the Conservative electronic database — known as CIMS — to look up the information herself.

Adams is also accused of telling companies to refuse work from the new riding association executive.

Adams, who currently represents the riding of Mississauga-Brampton South, has not been in the Commons this week.

More to come