The UP Police recruitment exam was held on Saturday with more than 6.57 lakh candidates appearing for it at 1,174 centres across 67 districts of the state under the watch of 25,000 police personnel and 2,300 magistrates.
The five-day exercise, which began on Friday, will conclude on August 31.
On Saturday, police arrested 20 people for various crimes, including spreading rumours about paper leak, a statement said.
Among those arrested was Anirudh Modanlal, who was nabbed by the Special Task Force (STF) for allegedly sharing fake question papers through Telegram app with the a few candidates against money.
The Uttar Pradesh Police Recruitment and Promotion Board (UPPRPB) also filed an FIR in Hussainganj, Lucknow, against individuals spreading false rumours about a paper leak.
According to the UPRPB, the exam will be held in two shifts on five days -- August 23, 24, 25, 30 and 31.
The fresh recruitment exercise to fill over 60,000 posts was necessitated after the exams held on Febr