Trotsky was living in New York City when the February Revolution of 1917 overthrew Tsar Nicholas II. He left New York on 27 March 1917, but his ship, the "SS Kristianiafjord," was intercepted by British naval officials in Canada at Halifax, Nova Scotia. He was detained for a month at Amherst Internment Camp in Nova Scotia. While imprisoned in the camp, Trotsky established an increasing friendship with the workers and sailors amongst his fellow inmates, describing his month at the camp as "one continual mass meeting".