It means the person must be given proper chance of being heard followed by fair and reasonable treatment under the judicial system.
Competent refers to the skills and characteristics that enable you to perform a job. If someone can perform a required task at a targeted level of proficiency, they are competent.
The rule of Felony murder is a legal doctrine in some common law jurisdiction that broadens the crime of murder.
A judicial writ issued as a command to an inferior court or ordering a person to perform a public or statutory duty.