However, another former chief minister S M Krishna, who has recently joined the BJP, got relief as the apex court said that the investigation against him "shall remain stayed" and granted three months time to the SIT to file the report before it after probing the roles of other two CMs and former and serving bureaucrats.
A bench of Justices P C Ghose and R F Nariman, meanwhile, restrained all other courts including the high court from passing any order in the matter and said, "We will keep it pending and we want to monitor it."
During the day-long hearing, the court said it wanted to see "some action" in the case as there was "no action" taken on the reports of the lokayukta.
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Initially, the court said there cannot be a "parallel investigation" by the state police after the lokayukta, which has investigating powers under the state statute, has probed the case and filed its reports with the executive authorities.
The bench did not agree with the submission that the probe against Krishna be also allowed, saying that there was nothing against the former chief minister in the lokayukta reports.
The counsel for Kumaraswamy opposed the submission, saying that it would amount to parallel proceedings.
"We are not disposing of the petition. If you have any problem, you can come to us," the bench told the counsel for JD(S) leader Kumaraswamy.
Krishna had then moved the apex court and got a stay on
the investigation on grounds including that he has not been indicted by the lokayukta.
Besides the three former CMs, various senior officials were accused of conspiracy and corruption.
It was alleged that Dharam Singh ordered issuance of temporary transport permits for the movement of iron and manganese ore from agricultural patta lands, resulting in a loss of Rs 23.22 crore to the government.
The complaint had further alleged that Kumaraswamy had illegally approved a mining lease in 550 acres of land in favour of Shree Sai Venkateshwara Minerals and committed illegalities relating to Jantkal Mining Company.
The lokayukta had submitted its reports to the authorities and so far, no criminal proceedings have been intiated.