Posted earlier: Kuroda said BOJ staff did not speak to the media before the alleged leak

More:

"According to our investigations so far, there was no exchange of information between BOJ staff" and the Nikkei that could have led to the report, Kuroda told parliament on Monday.

"We plan to publicise the outcome of our investigations," he added, though he did not say when it will become available.

That's Reuters with more

-

The Nikkei ran a story online saying the BOJ was discussing adopting negative interest rates a few minutes ahead of the official announcement