Nitish Kumar’s party attacked BJP, and tension rose in the alliance.

Chief Minister of Bihar, Nitish Kumar, has summoned a meeting of all Janata Dal (United) MPs and MLAs on Tuesday, leading to speculation his growing clash with the BJP may come to a head.

Among the many reasons Mr. Kumar is especially upset with the BJP, an associate partner of the Janata Dal (United) in Bihar, has been the BJP-led central government’s proposal of token representation to partners as Union Ministers.

Mr. Kumar’s party had refused another Rajya Sabha berth last month to his former JD(U) coworker RCP Singh, who had taken a spot in Prime Minister Narendra Modi’s cabinet last year without conferring with Mr. Kumar. Mr. Singh bade farewell to the JD(U) over the Rajya Sabha snub.

“There’s a conspiracy against me because I’d become union minister,” said Mr. Singh, a former Indian Administrative Service officer who was once the national president of JD(U). “I’ll just say that there’s no cure to jealousy,” he said while leaving the JD(U) yesterday. “Nitish Kumar will not be able to be the Prime Minister of India in any of his seven lives,” he said, describing the JD(U) as a sinking ship.

Mr. Kumar responded by sending out his party’s top leaders to answer to allegations by Mr. Singh of pettiness and for allegedly dragging his family into a political fight by mentioning illegal property deals.

The JD(U) national president Rajiv Ranjan (Lalan) Singh, in a hurry to blunt the attacks by Mr. Singh, however, appeared to have overcorrected when he ended up threatening the alliance party BJP.