Kumar issued the instructions at a review meeting held with the state's chief secretary, home secretary and director general of police, an official release said.
Four persons died after consuming spurious liquor in Rohtas district last night, following which nine police personnel were placed under suspension today.
A complete ban on sale and consumption of alcohol was imposed in Bihar April last year.
Explanations have been sought from a number of officials regarding the lapse, while the police today raided a shop owned by one of the accused and seized liquor bottles.
Meanwhile, according to another release, the chief minister met and blessed a couple from Bhojpur district who had tied the knot without giving or accepting dowry.
Kumar had, on October 2, called for a statewide campaign against dowry and child marriage.