"The Nitish Kumar government is moving towards dictatorship and it will soon collapse," he told reporters here.
Accusing the chief minister of trying to gag people's voice, Prasad said, "Kumar is trying to enact a black law to prevent people from holding protest and demonstrations against the state government."
He also accused the Nitish Kumar government of failing on all fronts.
"There is rampant corruption and high unemployment rate in Bihar," Prasad said.