(Reuters) - Japanese prosecutors on Tuesday decided to work with Tokyo police on a joint probe relating to a data tampering scandal at Kobe Steel Ltd , the Nikkei business daily reported, citing a source familiar with the matter.
Prosecutors have already subpoenaed documents from Kobe, Japan's third-largest steelmaker, Nikkei reported.
The company admitted last year to supplying products with falsified specifications to about 500 customers, throwing global supply chains into turmoil.
Kobe said it had sold products that met safety and other standards but did not fulfil contract specifications agreed with customers.
Kobe could not immediately be reached for comment.
(Reporting by Ahmed Farhatha, Editing by Rosalba O'Brien)