District Magistrate of Amethi district in Uttar Pradesh, Jagat Rai, said thorough probe was conducted into the allegations.
"We received complaints from 20-25 booths that rigging is going on. After probe, the complaint was found baseless," he added.
This phase of polling is considered crucial for the incumbent Congress party as it now holds nearly half the 64 seats.
The past week saw fierce attacks and counter-attacks between the Congress and the Bharatiya Janata Party (BJP), whose prime ministerial candidate Narendra Modi took his battle to the Gandhi citadel of Amethi, telling voters it was time to send the dynasty packing for its broken promises.
Crowds of voters queued up at polling booths in Amethi as they pinned hopes on these elections.
Meanwhile, the EC official also asked Preeti Sahay, political secretary of Priyanka Gandhi, to leave Amethi after her alleged spat with BJP candidate Smriti Irani.
"Anybody, who is not a voter, cannot stay in Amethi parliamentary constituency. Since Preeti is not a voter here, I issued an order that she should leave Amethi and she followed that order," added Rai.
Amethi is witnessing the high-decibel fights between Congress party vice-president Rahul Gandhi, BJP candidate Smriti Irani and Aam Aadmi Party candidate, Kumar Vishwas.
"We had received information of booth capturing and our workers being threatened. We immediately reported it to Election Commission and the concerned officials. Now it is up to them to take action," said Vishwas.
For the first time in a decade, Gandhi visited his parliamentary constituency Amethi, on the voting day, urging supporters to vote in large numbers.