 According to the production notes, there were bizarre incidents on  set of life reflecting art. On the seventh day, the production  office was discovered to have flooded overnight, the result of a  burst water pipe. Water is a strong theme in the film. In response,  director Hideo Nakata (qv) requested a Japanese purification  ceremony be carried out by a Shinto minister, but the strange  incidents continued. While on location, a swarm of thousands of bees  descended on the prop truck, prompting the immediate evacuation of  the department, before the bees left as quick as they arrived. For  no apparent reason, a five