The vehicles bore the number plate MP09 BA 6711. As commotion grew at the spot, the police intervened and after its initial probe allowed Parihar to leave.
Congress workers then staged a roadblock protesting against BJP's corrupt tactics to lure voters with money and violating the rules set by the election commission. They alleged the police of colluding with Parihar and letting him go without facing any action. There were reports of angry farmers also holding a separate protest over the incident.
Parihar is the representative of Lok Sabha Speaker Sumitra Mahajan.
The incident comes a day before the crucial state elections, results of whom would be declared on December 11.
More details are awaited.