According to some accounts, stones were thrown by residents of a Dalit locality in Nandan village who wanted Kumar to visit their homes to see for himself the lack of amenities there.
The villagers were angry over the non-availability of basic amenities and alleged that no work had been done under the seven resolves for governance launched by the government in 2015 that promised piped drinking water, pucca internal roads, drains, among others, to alleviate their terrible living conditions.
However, the chief minister's cavalcade moved ahead without paying heed to their demand.
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Police personnel resorted to mild lathicharge to disperse the squatters.
The news agency said that Kumar's security personnel suffered injuries in the incident.
However, a district police official denied the vehicles were attacked or damaged.
The accompanying officials had a hard time in escorting the chief minister to safety.
Police said the incident took place when Nitish was returning from Nandar village of Buxar.