What are the right s of a person under custodial investigation?

A person under custodial investigation has several rights, including the right to remain silent to avoid self-incrimination, the right to legal counsel, and the right to be informed of the charges against them. They should also be informed of their rights upon arrest, typically through a "Miranda warning." Additionally, they have the right to humane treatment and to be free from coercion or mistreatment during the investigation process.