Indicating beginning of the process of formation of the new block, Kumar said many of the leaders have evinced interest in this new grouping.
Kumar categorically ruled out any chance of JD(U) returning to NDA.
"Koi Sawal hi nahi utha hai (the question does not arise)," he said in reply to a question in this regard.
The Bihar CM also dismissed party chief Sharad Yadav making any statement against formation of this new block. A section of media had quoted Sharad Yadav as saying yesterday that formation of a new block is just a "gupbazzi" (gossip).
"I had a talk with Sharad Yadav this morning and he denied saying anything of this kind...Some media persons might have thrust words in his mouth," Kumar said.
There are reports of the CPI and CPM fighting the coming Lok Sabha elections in Bihar with JD(U).