This chapter analyses the procedural, legal, and practical dimensions of engaging with environmental crime investigators who identify violations of national environmental statutes and regulations. The initial section of the chapter examines the repercussions and results of environmental offences, encompassing illicit mining, deforestation, and breaches of pollution laws related to hazardous waste. It suggests that individuals are increasingly aware of environmental violations, perceiving them as significant dangers to national security, the environment, and public health. The chapter presents its findings utilising both legislation and governmental statistics. It also illustrates progress in the surveillance and reaction to environmental offences, recognising both the achievements and obstacles faced in attaining compliance. An analysis of the investigative process encompasses the registration of crimes, evidence collection and examination, scene management, and the execution of legal procedures, employing a comprehensive marketing model that incorporates methods utilised both prior to and subsequent to the emergence of an issue. Priority is assigned to organic and scientific disciplines globally. In cases of environmental crime, it is necessary to have the necessary information, collaborate with other agencies, and follow the law, which includes keeping the chain of custody intact. This chapter discusses enforcement measures, including active listening during investigations. Investigators ought to ground their analysis in interviewing, documentation, enquiry, and scene observation. The subsequent chapter emphasises the necessity of robust institutions, stringent rules, and local community engagement to address environmental issues and achieve sustainable justice.