The investigator conducting the interview should do so on neutral grounds to:

Conducting interviews on neutral grounds is critical for several reasons that contribute to the integrity of the investigation process. One of the primary benefits is the creation of a relaxed atmosphere for witnesses, which can encourage them to speak more freely and openly about their experiences. When witnesses feel comfortable, they are more likely to provide accurate and detailed accounts, which is essential for gathering reliable evidence.

Additionally, neutral locations help maintain focus on the evidence at hand. By removing potential distractions or pressures that might arise from a more charged environment, investigators can concentrate on the information being shared and ensure the conversation remains pertinent to the investigation.

Furthermore, neutrality is key to avoiding bias in witness statements. Conducting interviews in a setting that is impartial protects against any influence that might arise from the surroundings, ensuring that the testimonies collected are representative of the witnesses' true experiences rather than being colored by the context in which the interview takes place.

Thus, the necessity for a neutral setting encompasses ensuring a relaxed atmosphere, maintaining focus, and avoiding bias—all crucial elements that enhance the overall quality of the investigation. This comprehensive approach underscores why all these aspects are essential, making the choice of conducting interviews on neutral grounds the best practice in investigative procedures.