New Delhi: Union Minister Ram Vilas Paswan has undergone a heart surgery in a Delhi hospital, said his son and Lok Janshakti Party (LJP) National President Chirag Paswan in a tweet.

The LJP Parliamentary Board meeting on Saturday evening was postponed due to Paswan's surgery.

LJP patron Ram Vilas Paswan remains hospitalized as the party faces a double crisis as the seat-sharing formula with the National Democratic Alliance (NDA) which includes -- JD(U), BJP and LJP -- is yet to be decided ahead of the Bihar Assembly elections.

Union Minister of Consumer Affairs, Food and Public Distribution Ram Vilas Paswan has been hospitalized for more than a month now.

His son, Chirag Paswan also said that his father might have to undergo another surgery in the coming weeks if the need arises.

Through his official Twitter handle, Chirag said, "For the last many days dad is getting treated in a hospital. Due to some sudden developments yesterday evening, an operation of his heart had to be conducted in the late night. If the need arises, then possibly after a few weeks another operation might be conducted. Thanks to all for standing by me and my family in this hour of struggle," Chirag's tweet read.

The political slugfest for the assembly elections in Bihar has already intensified and the seat-sharing distribution by the NDA is yet not clear. On the other hand, Chirag Paswan has to ensure his party's smooth preparations for the Bihar elections as well as attend to his father at the hospital.

Bihar has 243 Assembly seats and elections will be held in three phases -- October 28, November 3 and 7 -- and the counting of votes will begin on November 10.