The Central Bureau of Investigation (CBI) has filed a probe report in the High Court in Dehradun in a 2016 case of horse-trading against former Chief Minister Harish Rawat.
The Uttarakhand High Court has already set September 20 as the next date for the hearing in the matter.
In a 2016 sting operation, the CWC member and Congress general secretary can be seen allegedly talking to a journalist for bringing nine rebel MLAs back to Congress'' fold.
Mr Rawat, meanwhile, has denied any involvement in the case and has termed it a conspiracy to frame him.
"Hard times lie ahead of me, there are some forces which want to destroy me. But I assure you that I will not break but would rather go down fighting," he said.
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