The Congress Parliamentary Party meeting in Delhi comes at a time when key UPA ally DMK has hardened its stand on the Sri Lankan Tamils issue by slamming the Centre for its "lukewarm" response on the matter and threatened to walk out of the ruling alliance if it failed to move amendments to a US-sponsored resolution at UNHRC.

"If our demands are not met, it is doubtful whether our ties with the alliance (UPA) will continue...It won't continue is sure," DMK President M Karunanidhi said in Chennai even as he shot off letters to Prime Minister Manmohan Singh and Gandhi, saying he felt "let down" by the government.

Gandhi, who is Chairperson of both CPP and UPA, will meet Congress MPs against the backdrop of the government and the party facing opposition flak over several issues including the Italian marines as also the VVIP chopper deal.