The Marumalarchi Dravida Munnetra Kazhagam on Wednesday said it would vote against the United Progressive Alliance government if a vote of confidence is moved and demanded the resignation of the Manmohan Singh government and the dissolution of Lok Sabha.

The MDMK has four members in the Lok Sabha, but the group had split as two of its MPs, L Ganesan and N Ramachandran, have parted ways with Vaiko.

The UPA government has become a minority one, MDMK leader Vaiko said in a statement in Chennai after the withdrawal of support by the Left parties.

Stating that India should not implement the nuclear deal at any cost, Vaiko said the party was opposing the deal as it would pledge India's sovereignty to the United States.