## **Core Concept**
The core concept here revolves around the legal and procedural aspects of medical jurisprudence, specifically focusing on when a police inquest is not required. In various jurisdictions, police inquests are mandatory for certain types of deaths to determine the cause and circumstances.

## **Why the Correct Answer is Right**
A police inquest is not done in cases of **natural deaths** or deaths due to **known medical conditions**. The specifics can vary by jurisdiction, but generally, inquests are required for deaths that are sudden, unexpected, or suspicious.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Death in police custody - This is a scenario where a police inquest is indeed required to investigate the circumstances of the death.
- **Option B:** Death due to accident - Accidental deaths often necessitate a police inquest to determine the cause and any potential foul play.
- **Option C:** Death due to homicide - In cases of homicide, a police inquest is crucial for gathering evidence and understanding the circumstances of the crime.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that police inquests are an essential part of the medico-legal process, aimed at ensuring justice and transparency in cases of unnatural or suspicious deaths. Understanding the specific scenarios in which inquests are mandatory versus not required can help in navigating complex medico-legal cases.

## **Correct Answer:** D.