Bloomberg reports, citing people familiar with the matter

The report says that officials remain comfortable with the latest yields movement as long as they are based on market fundamentals and within the BOJ's range. As a reminder, the BOJ in July hinted that they will allow the 10-year bond yields to fluctuate by 0.2% above or below zero.

For some context, 10-year yields fell to its lowest levels since July today:

As yields move back closer towards zero, it further highlights the struggles faced by the BOJ as it sets out to attempt to normalise monetary policy over the next few years. Couple that with recent economic headwinds, the central bank don't look anywhere near to moving away from current easing policies currently.