The special rapporteur appointed to determine whether a public inquiry should be held into foreign interference in Canada’s last two federal elections says it isn’t necessary.

David Johnston says, instead, public hearings should be held, reasoning that much of the evidence that would need to be presented in an official inquiry is of a classified nature.

Johnston said that while there has been evidence of foreign interference it is not as concerning as recent reports suggested.

The former governor general was tasked by Prime Minister Justin Trudeau with leading the investigation in March, a move criticized by members of the opposition due to Johnston’s close ties with the Trudeau family.

A final report is expected this fall.