The Prime Minister's Office on Monday said it has issued no instructions to the CBI in connection with the Rose Valley case and a letter which appeared in some newspapers in this context is "forged".

In a rejoinder to the news organisations of West Bengal which "displayed" such a purported letter, the PMO wrote: "This has reference to a report appearing in your publication regarding a letter purportedly written by the Prime Minister s Office to CBI on the Rose Valley case.

"The report alleges that PMO has issued certain instructions to CBI in the matter. A copy of the purported letter has also been displayed." 

The said report, the PMO said, "is totally false and baseless." 

It said the "letter displayed in your publication is a forgery" as "No such letter has been issued by the Prime Minister s Office." In the Rose Valley scam case, CBI has arrested Sudip Bandyopadhyay and Tapas Pal, MPs of Trinamool Congress, which is in power in West Bengal.