4. The National Bureau of Investigation (NBI) received a tip on a very important case the bureau has been working on it. It deals with massive dug dealing using hotel suites as meeting places of high profile drug dealers. NBI sought the cooperation of the hotel management for an entrapment operation. Wiretapping devices were installed. The adjacent suite was reserved for NBI agents on a stakeout. Was the operation legal and justified? Explain with legal basis.