SHO Subhash Chandra Yadav of Sikandarpur police station identified the arrested SP leaders as Sheikh Ahmad Ali, Sanjay, Suabul, Islam and Ravi Yadav.
A case of rape was lodged against Bahujan Samaj Party's Ghosi (Mau) MP Atul Rai at the Lanka police station there in May 2019.
In the video, the accused could be seen flogging a man, who had his hands and legs tied, and giving him an electric shock.
Balveer Singh alias Jaleshwar Singh (35) was in a car with Sabal Singh (40), who is the husband of another district panchayat member, when they were attacked by the bike-borne assailants.
The state police had on Sunday registered a case against 10 people, including a newly-elected chairperson of zila panchayat, for allegedly indulging in indecent sloganeering against the minister.
According to Ballia residents, at least 45 bodies were seen floating near the Ujiyar, Kulhadia and Bharauli ghats in the Narahi area on Tuesday evening.
Pushpa of Bahadurpur village was taken to a Garhwar hospital following pain in her chest and a doctor administered an injection while referring her to the district hospital.
Singh told the police that he had used his licensed revolver during the incident on October 15 leading to the death of Jai Prakash Pal alias Gama Pal, police said in a release here on Friday.
The local BJP leader, who is the main accused in the case, had shot dead a 46-year-old man following a quarrel over the allotment of shops.