"The accused Sumit Jaiswal, Shishupal, Nandan Singh Bisht and Satya Prakash Tripathi have been arrested by Lakhimpur Kheri Police and SWAT team of Crime branch."
Thursday is the last day of the police custody of Ashish Mishra and a huge police presence was seen at the crime scene.
The Lakhimpur Kheri police have also arrested Shekhar Bharti, the driver of Ankit Das, whose vehicle was in the convoy that mowed down nine persons, including four farmers on October 3.
Ashish Mishra was named in an FIR following allegations that he was in one of the vehicles that mowed down four farmers protesting over UP Deputy Chief Minister Keshav Prasad Maurya's visit last Sunday.
There will be no injustice with anyone and no action will be taken under any pressure, Uttar Pradesh Chief Minister Yogi Adityanath said on Friday, amid demands by the opposition to arrest Union Minister Ajay Mishra's son in the Lakhimpur-Kheri violence case.
Ashish had been summoned to appear at 10 a.m. at the crime branch office in the reserve police lines on Friday. However, he failed to turn up at the given time.