New Delhi:  As a series of letters exposed a widening chasm in the Aam Aadmi Party, Yogendra Yadav, one of the leaders seen to be ranged against party chief Arvind Kejriwal, tweeted this morning: "Let petty politics not come in the way of our greater purpose."

At the same time, a new note today added to the roiling crisis in AAP amid reports that Yogendra Yadav and Prashant Bhushan, two founder members, will be laid off by the party.

Sources close to Yogendra Yadav have come out with a detailed rebuttal of a letter by AAP's Delhi secretary Dilip Pandey, which has accused Mr Yadav, Prashant Bhushan and Shanti Bhushan of "acting in concert towards a singular aim of weakening the party and then replacing Kejriwal with Yadav as party head."

Today's note does not address the allegation that Mr Yadav tried to unseat Mr Kejriwal. But it denies that he blamed Mr Kejriwal for the party's disastrous debut in the May national election. It also says Mr Yadav and Mr Bhushan never interfered in the party chief's decisions on the Delhi polls, in which the party scored a historic victory last month.

On Sunday, NDTV reported on two internal notes that allegedly triggered a plan to remove Mr Yadav and Mr Bhushan from the Political Affairs Committee, the party's highest decision making panel.

One was a joint note by Mr Yadav and Mr Bhushan, written on February 26, summarising concerns about the functioning of AAP and alleged dubious practices by AAP candidates in the Delhi election.

A separate letter by Mr Bhushan on the same day was harsher, taking direct aim at Mr Kejriwal. "One-person-centric campaign is making our party look like other parties," wrote Mr Bhushan.

He also alleged, "Our systems of accountability have become largely dysfunctional. Many volunteers complained to me they were brutally silenced when they complained about candidates."

AAP hasn't officially responded to these letters. Party sources by way of defense released the letter written by Dilip Pandey on Saturday.