Where was Martin Luther King's assassin arrested?

On April 4, 1968, James Earl Ray killed Martin Luther King Jr. with a single shot fired from his Remington rifle, while King was standing on the second-floor balcony of the Lorraine Motel in Memphis, Tennessee. Shortly after the shot was fired, witnesses saw Ray fleeing from a rooming house across the street from the motel; he had been renting a room in the house at the time. A package was abandoned close to the site that included a rifle and binoculars, both found with Ray's fingerprints.

Ray fled to Atlanta in his white Ford Mustang, driving eleven hours. He picked up his belongings and fled north to Canada, arriving in Toronto three days later, where he hid for over a month and acquired a Canadian passport under the false name of Ramon George Sneyd. He left Toronto in late May on a flight to England. He stayed briefly in Lisbon, Portugal, and returned to London.

On June 8, 1968, two months after King's death, Ray was arrested at London Heathrow Airport attempting to leave the United Kingdom for Brussels on a false Canadian passport. At check-in, the ticket agent noticed the name on his passport, Sneyd, was on a Royal Canadian Mounted Police watchlist.

At the airport, officials noticed that Ray carried another passport under a second name. The UK quickly extradited Ray to Tennessee, where he was charged with King's murder. He confessed to the crime on March 10, 1969, his 41st birthday, and after pleading guilty he was sentenced to 99 years in prison.