A more thorough explanation:

Definition: A person who is interrogated.

Example: The police officer questioned the suspect, who became the interrogatee.

Explanation: In this example, the suspect is the person being questioned by the police officer. Therefore, the suspect is the interrogatee.

Also termed: interrogee

Example: During the trial, the witness was called to the stand and became the interrogee.

Explanation: In this example, the witness is the person being questioned during the trial. Therefore, the witness is the interrogee.