In 1956 John McCarthy implemented Artificial Intelligence (AI) for the first time. AI is considered a tool for coping with extremely complex problems which cannot be solved through direct equations or statistical techniques. AI could be used for calculating differential and integral equations, electrical circuit theories, logical mathematics, and areas of gaming. Using the same strategy, AI has been included in law enforcement, where it can function as a statistical analysis that can efficiently anticipate and deter crimes. Law enforcement, has gradually turned to artificial intelligence to increase smart policing approaches. AI is said to be a critical element in law and it will help and promote efficiency in certain ways. The primary aim of law enforcement is to prosecute crimes by including a social aspect of protection and security, AI may be used in several forms to accomplish such targets. This article aims at reviewing the use of AI by law enforcement to tackle criminal activities. Keywords: Smart policing; Artificial Intelligence; Machine Learning; Crime Investigation.