Mankotia confirmed that he had received a letter, informing him about this.
When asked to comment on the matter, he said that he would speak out in detail later.
A five-time MLA and twice minister in governments headed by Chief Minister Virbhadra Singh, Mankotia had lost the elections in 2012 and was later appointed vice chairman of the state tourism board.
Mankotia, considered a firebrand leader, had been critical of the government for some time and had recently said that "it will be difficult to fight the BJP , which has made corruption its main issue".
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