Himachal Pradesh Chief Minister Virbhadra Singh on Tuesday informed the assembly that there was no move to appoint his deputy.
As the question hour began, BJP member Rikhi Ram Kaundal referred to a news item that said there was a "possibility of appointment of a deputy chief minister".
Speaker B.B.L. Butail said the question could not be allowed and asked Kaundal to take up the question mentioned in his name.
At this, Virbhadra Singh got up and said the news report was false and "planted" and there was no truth in it.
BJP members kept raising the issue and shouted slogans against the government, disrupting the question hour. Later, they staged a walkout from the house.
The proceedings of the house went on in the absence of BJP members. After the question hour, the BJP members joined the proceedings.