Around 104,000 packs of the bread have been recalled in mainland Japan, from Tokyo to the northern Aomori region.
Food recalls are rare in Japan, a country with famously high standards of sanitation, and Pasco Shikishima Corporation said it was investigating how the rodent remains had crept in to its products.
The company said it was so far unaware of anyone falling sick after eating its processed white “chojuku” bread, long a staple of Japanese breakfast tables.
More than 100,000 packets of sliced bread have been recalled in Japan after parts of a black rat’s body were discovered inside two of them, the manufacturer said Wednesday.
Japanese media reports said at least two people who bought the bread in Gunma Prefecture, northwest of Tokyo, complained to the company about finding a rodent in the bread.
“We would like to apologise deeply for causing trouble to our customers and clients,” the company said in a statement on Tuesday.
Then on Wednesday, Pasco confirmed that parts of a black rat had contaminated the two packs.
They were produced by the bread maker at a factory in Tokyo, whose assembly line has been suspended pending its probe, Pasco said.