Canada’s foreign ministry says it is trying to make contact with a second Canadian who is believed to have been detained in China.
Michael Spavor, a businessman based in Dandong near the North Korean border, had contacted Canadian officials this week to say he was being questioned.
Foreign ministry spokesman Guillaume Bérubé said Canada was working hard to determine Mr Spavor’s whereabouts.
It comes after former diplomat Michael Kovrig was arrested in China this week.