Michael Kovrig, whose arrest kicked off a diplomatic spat, says he was held in solitary confinement for months.

A former Canadian envoy whose imprisonment in China kicked off a high-profile diplomatic spat has accused Chinese authorities of inflicting “psychological torture” on him.

Michael Kovrig says he was placed in solitary confinement for months and subjected to “relentless interrogation” when he was arrested in December 2018 and held for more than 1,000 days.