"We have sought a report from the District Magistrate at the earliest...We will take action after going through the (inquiry) report," Additional Chief Electoral Officer (ACEO) R Lakshmanan told PTI.
Meanwhile, Senior Bihar BJP leader Sushil Kumar Modi told reporters that a CBI inquiry should be ordered to bring the truth of the Nitish Kumar government.
Kushwaha, who held Urban Development and Registration, Excise and Prohibition departments, had yesterday resigned from the Nitish Kumar cabinet after a video went viral on social networking sites where Kushwaha was shown accepting money from a Mumbai-based businessman in return of favours.
Kushwaha's expose came as a big embarrassment for the Nitish Kumar government and his grand secular alliance hours before the first phase of polling.
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Kushwaha termed it as "a high-level" conspiracy hatched by his rivals and expressed hope that he would come clean.
The JD(U) has announced it would replace Kushwaha at Pipra Assembly seat in East Champaran in the wake of the sting.