The seven ministers were suspended by state JD(U) President Basistha Narayan Singh after receiving consent from the party's National President Sharad Yadav, party chief whip in the Assembly Shrawan Kumar told PTI.
The seven suspended ministers are Narendra Singh, Brishen Patel, Shahid Ali Khan, Samrat Chaudhary, Nitish Mishra, Mahachandra Prasad Singh and Bhim Singh.
Art and Culture minister Vinay Bihari is an independent.
JD(U) has already expelled Manjhi from the party after which Assembly Speaker Uday Narayan Chaudhary declared him an unattached member.
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Manjhi on return from Delhi after a two-day visit headed straight to his residence and was closeted with supporters to draw up the strategy for the February 20 confidence vote.
Ministers Narendra Singh and Vinay Bihari, dissident JD(U) leader Gyanendra Singh Gyanoo and expelled JD(U) MP Shabir Ali were among others who met Manjhi at his residence.
Former chief minister Nitish Kumar remained at his 7 Circular Road residence with senior party leaders who kept pouring in through out the day.
JD(U) MLC Binod Singh is hosting a dinner for all MLAs supporting Nitish Kumar from JD(U), RJD, Congress, CPI and an independent.
A similar dinner is scheduled at senior leader Vijay Chaudhary's residence tomorrow and at Nitish Kumar's residence on February 19, JD(U) sources said.