The Australian journalist who wrote a controversial biography of Crown Princess Masako has received death threats ahead of the release of its Japanese translation.
Daisan-Shokan, the Tokyo-based publisher of the translation, has also reported being targeted by rightwing nationalist groups.
The translation of "Princess Masako, Prisoner of the Chrysanthemum Throne" by Ben Hills is due to be published in early September.
Hills said he has received several e-mail death threats via his Web site in the leadup to the Japanese publication.