Canada has announced that a judge will conduct a public inquiry into whether there was interference by China, Russia and other countries in the 2019 and 2021 federal elections in which Prime Minister Justin Trudeau Liberal Party was re-elected.

Conservative lawmakers have called for a full investigation into allegations of Chinese interference since reports surfaced months ago in which intelligence sources claimed China had intervened to support liberals and to defeat conservatives, considered as hostile to Beijing.

The opposition New Democrats then insisted that the investigation also cover Russia, Iran and India.

Public Security Minister Dominic LeBlanc said Thursday that Justice Marie-Josée Hogue of the Quebec Court of Appeal would lead the investigation and that opposition parties supported her appointment.

“Foreign interference in Canadian democratic institutions is unacceptable,” LeBlanc said. “China is not the only foreign actor seeking to undermine the democratic institutions of Canada or other Western democracies. This challenge is not unique to Canada.

A few months ago, a Trudeau appointee rejected a public inquiry into the leaked report on alleged Chinese interference, sparking accusations of a cover-up from the Conservative opposition. The official, former Governor General David Johnston, resigned in June, saying his work was hampered by the partisan environment.

The government has said it supports carrying out such an inquiry and has invited all parties to discuss what form it should take.

LeBlanc said the investigation would cover allegations involving China, Russia, Iran and India related to the 2019 and 2021 federal elections and would submit its report late next year. He said an investigation would also be carried out into how information reaches top officials and how they evaluate it.