The action came after an FIR was filed by the CBI in connection with the 'illegal' appointment of nearly 100 Chief Medical Officers.
The two politicians, arrested on March 3, were produced in the court after the expiry of their 10 days CBI custody.
Mahendra Sharma, a clerk with the health department in Lakhimpur district, was found dead under mysterious circumstances.
Thirty teams of CBI raided health department officials and firms that supplied medicines and other material.
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