Northland MP Mike Sabin resigns

Northland MP Mike Sabin has announced he has resigned as a member of Parliament, effective immediately.

There have been reports Mr Sabin was being investigated by police over assault-related allegations, although neither Mr Sabin, the police nor Prime Minister John Key would confirm that.

Mr Sabin announced in a short statement that he had decided to resign "due to personal issues that were best dealt with outside Parliament."

Prime Minister John Key said he "acknowledged" the resignation of Mr Sabin for personal reasons and was getting advice on the possible date for a by-election.