Janata Dal-United leader Sharad Yadav does not approve of Bihar Chief Minister Nitish Kumar's move to dump the 'grand alliance' and form government with the Bharatiya Janata Party, according to Communist Party of India leader D Raja who met him in New Delhi on Sunday.

Raja said Yadav is 'upset and disturbed' over the developments in Bihar.

In a sudden development, Kumar had quit as Chief Minister on Wednesday last, dumping the grand alliance with the Rashtriya Janata Dal and the Congress.

He formed a new government next day with the BJP.

"I understand he (Yadav) was kept out of the decision," the CPI leader told PTI.

Raja said he met Yadav after the latter called him up yesterday when he was in Chennai.

Yadav, former president of JD-U, has so far not commented publicly on the Bihar developments.

Describing Kumar's action as 'betrayal of the people's mandate' in Bihar, Raja said, 'in this moment of crisis, Yadav should stand up and lead the fight against evil designs of BJP-RSS and communal forces'. -- PTI