They claimed that the latest incident further proves the administration and election authorities' partisan approach against BJP and linked it to the local administration's denial of permission to Modi's rally here on May 8.
Yadav, however, said he was not affected by the criticism and defended his denial of permission for Modi rally, saying the decision was taken on the basis of available information.
He said that the Modi rally and roadshows by Rahul Gandhi and Kejriwal were different matters and decisions for each one was taken as per relevant information.
In Delhi, an Election Commission order about today's incident said, "On receipt of a complaint, a flying squad checked the vehicle at the office of the BJP in Varanasi.
"After obtaining a report from special observer and after finding that no irregularity has taken place, the Commission has directed the release of the material and drop further action."
Asked about the raid, BJP Spokesperson Meenakshi Lekhi rejected the charges and sought CEC's intervention, alleging that the Uttar Pradesh authorities are continuing to work at the behest of the state government.
"I request the CEC to intervene and put the position in order," she said, adding, "We want action by the constitutional body".
"They need to act now and act firmly to establish their authority," Lekhi said. She also questioned why only the BJP office was raided and not that of others as "the poll authorities could have recovered a lot more had they raided others also".
She said the raid was conducted a day before polls only to pressurise the BJP supporters and workers so that they are unable to come out during polling.
"The district authorities claim that they are working under the Election Commission, but it seems they are still working under the state government's authorities," she said.