Despite boycott calls from China's tourism body, hotel operator Apa Group said it will not remove books, written by its CEO and placed in its hotel rooms, that deny the Nanking Massacre.

But the operator of the Apa Hotels & Resorts chain also said it would consider withdrawing the books from a hotel in Sapporo, where a major winter sporting event is scheduled to take place next month.

The book, titled "Theoretical Modern History II — The Real History of Japan," was written by CEO Toshio Motoya under the pen name Seiji Fuji. It claims that the Imperial Japanese Army's involvement in the 1937 Nanking Massacre "was fabricated by the Chinese side and did not actually happen."