In this Malay name, there is no surname or family name. The name Mohd Zain is a patronymic, and the person should be referred to by their given name, Mohd Shuhaily. The word "bin" or "binti"/"binte" means 'son of' or 'daughter of', respectively.
Mohd Shuhaily bin Mohd Zain was born in Kuala Lumpur on 12 July 1972. His father, Mohd Zain bin Ismail was a traffic policeman in Kuala Lumpur. His father also served in Police Field Force (PPH) during the Second Communist Uprising in Malaysia.[4]
Mohd Shuhaily has served as Chief of Police for the Lower Perak District, Chief of Pahang Special Branch, deputy director of Bukit Aman Special Branch, Penang Police Chief and Kuala Lumpur Police Chief.[5] He was assigned to assume duties as the Director of the Criminal Investigation Department of Police (JSJ) from 15 August 2023 replacing Ayob Khan Mydin Pitchay.[6]