One complaint I almost always get from my clients is, "The cop never read me my rights."
I'm sure he didn't.
The only time the Miranda warnings have to be read to a person by an officer is when (1) the person is arrested and (2) the officer intends to take a written or video/audio recorded statement. Otherwise, it doesn't matter.
And, yep, that's a picture of Mr. Miranda. (After being released from prison, he was stabbed to death at the ripe old age of 36.)