HYDERABAD: The Central Bureau of Investigation (CBI) officials on Sunday arrested four persons, including National Highways Authority of India (NHAI) general manager and NSS Infrastructure employees, for allegedly accepting a bribe of Rs 27 lakh for official favours. According to CBI officials, the agency has registered cases under Section 7 and Section 8 of Prevention of Corruption (Amendment) Act, 2018 and Section 120 B (criminal conspiracy) of IPC. Gali Sridhar, the general manager of NHAI; Sudhakar Vaduppu and Pawan, who are employees at NSS Infrastructure; and Gali Sridhar’s relative Sai Prasad were booked under these charges.