New Delhi: Cracking a whip on the Centre, the BJP has threatened to resign from all parliamentary committees if the Lok Sabha Speaker Meira Kumar refuses to accept the Public Accounts Committee (PAC) chairperson Murli Manohar Joshi's report on the 2G spectrum allocation scam.

BJP members will resign if the report is not accepted, sources said.

A day after a chaotic meeting of the Parliament's PAC, Joshi along with NDA, AIADMK, BJD and Left members have decided to submit the draft report on 2G scam to Lok Sabha Speaker Meira Kumar before its term expires on Saturday.

Joshi is understood to have held confabulations with members of like-minded parties in the Public Accounts Committee and discussed the legal  angles relating to his powers as its chairperson.

Sources aware of the developments said here that Joshi is busy examining the various rules governing the functioning of the PAC before he takes a final call on submitting the draft report to the Speaker.

A member of the committee pointed out that Joshi was "free" to submit the report to the Speaker's office even in her absence. She is on a tour to Arunachal Pradesh.

The UPA members, however, feel Joshi cannot go ahead and submit the report as it was not passed by the PAC. 11 members of the committee, belonging to the Congress, DMK, SP and BSP had "rejected" the draft report on Friday.