New Delhi, April 27 -- In a rare move, Aam Aadmi Party (AAP) chief Arvind Kejriwal said on Monday that he and his lawyers will not participate or argue further in the excise policy case proceedings before Justice Swarana Kanta Sharma.

In a letter to Sharma, former Delhi Chief Minister Arvind Kejriwal highlighted the "serious issue of conflict of interest", saying that both of Sharma's children are "professionally engaged on multiple advocates' panels of the Union Government."

He said the Central Bureau of Investigation (CBI) is the opposite party in the excise policy case against Kejriwal.

Earlier, Kejriwal had sought that the excise policy case be transferred from Justice Swarana Kanta Sharma to another judge, saying that if the matte...