Noida, April 4 -- The mastermind of the alleged Uttar Pradesh Police Constable Exam 2024 paper leak was arrested by the Noida special task force (STF) from Greater Noida on Tuesday night, said a senior officer in the know of the matter on Wednesday, adding that the suspect had also leaked the question paper of Uttar Pradesh Teacher Eligibility Test (UPTET) 2021 and the National Health Mission (NHM) contractual staff nurse recruitment exam in 2023....