Six lawmakers belonging to the Samajwadi Party, who voted against the confidence motion, were served notices by the Lok Sabha Secretariat on Thursday, taking the number of such members of different parties to 15.

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The party, which has already expelled the lawmakers, made the demand for their disqualification in a representation to the Speaker last week.

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The MPs are Jai Prakash (Mohanlalganj), S P Singh Baghel (Jalesar), Raj Narain Budholia (Hamirpur), Afzal Ansari (Ghazipur), Ateeq Ahmed (Phulpur) and Munnawar Hussain (Muzaffarnagar).

Eight Bharatiya Janata Party MPs and one from Biju Janata Dal were served notices earlier. There were in all 24 opposition lawmakers, who either voted for the government or abstained.