Chairman – Felix Perumal

International Investigators Network is led by Felix Perumal, a former Inspector of the Sri Lanka Police. His 19-year long career was one of the primary reasons that led to the birth of Vigilant Security and Investigation Services. As a result of its excellent field work, the company formed its separate investigation arm, International Investigators Network (IIN) in 2002.

Perumal is a member of World Association of Detectives (WAD), Fellow of the Industrial Security Foundation (FISF), Sri Lanka and is also a founder member and Past President of the Sri Lanka Security Service Providers Association (SLASSPA).

Manager Investigations – Nandana Ratnayake

Holds a Bachelor of Arts degree from the University of Kelaniya and also a Senior Detective Diploma from Sri Lanka Police Academy. Has 13 years of service experience with the Criminal Investigation Department (CID) handling inquiries and Detections in relation to fraud, Human smuggling, document verification, and intellectual property investigations. He has received training and hands on work experience through international agencies such as AFP (Australian Federal Police), ASS (American Secret Service), IOM (International Organization of Migration) and Interpol. Has been with IIN Since 2015.

Managing Director – Mario Perumal

With over 20 years of experience in managing cases for Vigilant Security and International Investigators Network, Mario is responsible for assessing the client requirements and delivery of service to clients. 

He is a Certified International Investigator and a member of Council of International Investigators (CII) since 2014. Mario is also a member of the National Association for Professional Background Screeners (NAPBS), APAC Chapter. He was a Past Vice President of Sri Lanka Security Service Providers Association (SLASSPA).