Ran a red light no camera but there was a witness no police either?

Today I accidentally ran a red light, there was no camera in the intersection but a man started following me and when I rolled down my window he said "you ran the red, you're in big trouble now" and then tried to write down my license plates. Obviously I was freaked out but I am wondering, what can... show more Today I accidentally ran a red light, there was no camera in the intersection but a man started following me and when I rolled down my window he said "you ran the red, you're in big trouble now" and then tried to write down my license plates. Obviously I was freaked out but I am wondering, what can the man actually do? Can he call the police and tell them I ran a red light. Should I be expecting a ticket?
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