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He says that John was dishevelled and confused: "He was just abandoned. He hardly went out of that room and it was in a terrible state."

His family found out when they saw him on TV the next day, looking scared and dishevelled.

His background - a teacher, a football coach, an Army National Guard enlisted soldier - broadcasts "meat-and-potatoes middle America", as does perhaps his balding, rotund, slightly dishevelled appearance.

"He is believed to be more dishevelled than he appears in the photo with longer hair and an unkempt beard," a Met spokesperson said.

"As I got closer to them, I noticed they looked a bit dishevelled, a bit dirty, possibly homeless people", Mr Rodgers explained.