Case Closed, known as Meitantei Conan (名探偵 コナン?, Detective Conan) in Japan, is written by Gosho Aoyama and serialized in Weekly Shōnen Sunday. The first chapter appeared in the May 1994 issue and the series is currently ongoing, with 714 chapters published as of November 18, 2009. In North America, Case Closed is licensed by Viz Media. Thirty-one volumes were released between September 7, 2004 and September 15, 2009. Viz continues to release the series bimonthly.