Police and security guards will conduct a special search of the Prime Minister's Official Residence in response to an e-mail threat that said explosives will be planted Thursday at the complex, government officials said Wednesday.
The message, which was sent to the Web site of the Prime Minister's Official Residence on May 19, warned that explosives would be placed somewhere on the premises May 30, the officials said.
The one-hour search will begin at 4 p.m., they added.
Security officers will check the inside and outside of the building, which is used as an office-cum-reception hall. Prime Minister Junichiro Koizumi and his team moved into the new building a month ago.