Japan's leading toilet manufacturer Toto is offering free repairs to 180,000 toilets after some of them caught fire.
There have been three incidents of the electric bidet accessory in Toto's Z series catching fire.
"Fortunately nobody was using the toilets when the fire broke out and there were no injuries," a company spokesman said.
"The fire would have been just under your buttocks," she added.
Toto is a pioneer of high-tech toilets with built-in bidets, which are popular in Japan.
The Z series features a pulsating massage spray, a power dryer, a "tornado wash" flush, and a lid that opens and closes automatically.
It is not sold outside Japan.
The offending loos were all manufactured between May 1996 and December 2001.
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