David Johnston concluded his tenure as special rapporteur by submitting his last report on foreign interference to the prime minister Monday evening. The report was marked as confidential.

Earlier this month, Johnston said he resigned because of the increasingly partisan atmosphere surrounding his work.

Johnston committed to delivering a final report to the government by the end of June.

Instead of publicly releasing his last report, a brief cover letter consisting of two paragraphs was released and addressed to Prime Minister Justin Trudeau.