From NHK but I'll include a translation for ya

Foreign object in Pfizer vaccine at vaccination site in Kamakura City, Kanagawa Prefecture

On September 12, the city of Kamakura in Kanagawa Prefecture announced that a foreign substance was found in a Pfizer vaccine at a vaccination site for a new coronavirus. The city has asked Pfizer to analyze it.

A white floating substance about 1 mm in diameter According to the city of Kamakura, a foreign substance was found in a bottle of Pfizer vaccine at the site of a mass vaccination against the new coronavirus at the city hall on March 12.

A pharmacist found a white floating substance when diluting the vaccine and putting it into a syringe, and the city stopped using the vaccine.

According to the city, the floating particles were about 1 mm in size.

The lot number of this vaccine is FF5357, but the other vaccines with the same lot number were used as is because there were no visual abnormalities.

According to the city government, there has been no information of any health hazard so far, and the city contacted Pfizer to request an analysis.

Translated with www.DeepL.com/Translator (free version)