What happened
Candidates allegedly supplied papers with answers before the 3 Jan 2021 computer-based test via WhatsApp for payment; CBI registered a case (Jan 2024) against exam agency Aptech Ltd and named 15 people including 10 railway officials and a CRPF constable.
What was done
Arrests / FIR
Official probe — CBI/SIT
Source
Primary reference ThePrint ↗ https://theprint.in/india/railways-exam-paper-leak-cbi-registers-case-against-mumbai-based-aptech-ltd/1916726/This entry summarises the linked report. Where the summary and the source disagree, the source wins — and please tell us.