The youth, identified as Amritosh Kumar from Chapra district, however, missed his target and as the shoe fell near the Chief Minister.
Eyewitnesses said when the security personnel on duty caught hold of Kumar, he flung the shoe. He was then led out of the hall.
They said that Kumar broke the queue, shouting that the state government was dividing the society on caste lines.
Kumar claimed that he came to the chief minister to complain about his being implicated in a false case by police.
Action would be initiated against him after detailed inquiry into the matter, the SSP said.
Manjhi later told reporters that the youth, a postgraduate student, who was standing behind five or six persons in the queue, turned furious and created a scene before his turn came to talk to the Chief Minister about his problem.
"A probe is on into the incident," Manjhi said.
Asked about Kumar alleging that the state government was dividing the society on castes lines, the Chief Minister said, "I just talk about the poor who hail from SC, ST, extremely backward classes, OBC, minorities and even from forward castes and stress on their welfare."
