Announced at his Twitter and interview with Barnes and Noble, Viz manga editor Joel Enos announced that the manga Tokyo Ghoul, by Sui Ishida, will be ending. The manga’s last volume will be volume 14 and it is set to be released on August 15. You can read the interview in the hyperlink above as he mentions about his experience with working with Tokyo Ghoul in the English manga. He also mentioned he will also be working on the sequel manga Tokyo Ghoul: re and the manga is set to be released on October 17.
Joel Enos is the manga editor to the manga series Tokyo Ghoul and Tokyo Ghoul: re and both manga are owned by Viz.