Calling Jharkhand Chief Minister Shibu Soren's action of voting with the government in Lok Sabha an act of betrayal, BJP on Wednesday convened a parliamentary board meeting to discuss the future of ties with JMM in Jharkhand where the two parties run a coalition government.

Senior party leaders said that BJP has taken very serious note of Soren's action and is not buying the explanation given by Soren's son Hemant that it has happened by mistake even as the Chief Minister wondered "what difference will it (his vote) make".