The incident took place at Narasimha Raja (NR) police station on Wednesday late night.
A large number of people gathered in front of the police station at 11 pm.
City Police Commissioner A Rao said that some candidates of NR, Chamaraja and KR Constituencies, who lost the recent polls, alleged that the seven people they handed over to the police had managed to hack EVMs.
The defeated candidates said that the group of seven had approached them prior to the elections offering to hack the EVMs for them. But they had sent the unscrupulous group away without accepting their offer.
The defeated candidates alleged that they had lost solely because this group had hacked EVMs for the contestants who won.
Rao confirmed that the police did not register any case in this connection and no one was taken into custody.
Deputy Commissioner Abhiram G Sankar stated that it was not possible to hack the EVMS.