Issuing the direction to Dhanbad Superintendent of Police at a Jan Samvad meeting here, Das asked the SP to monitor the case personally.
The case was related to a murder of one Ashish six months ago, according to an official release here.
The Chief Minister's direction came on the complaint of the mother of the deceased.
In another complaint at the Jan Samvad meeting on corruption charges against Mukhias (village heads) of different Panchayats, Das directed his secretary to ensure FIRs were lodged in all such cases and directed to dismiss all such Mukhias who were found guilty of corruption charges, the release said.
Das asked the authorities concerned to take stringent action in all such cases of corruption.