Brothers and sisters, I have none-Riddle

Riddle
Jagga is looking at a photograph of someone. Dhamaka Singh asks him who it is. Jagga replies,''Brothers and sisters, I have none. But that man's father is my father's son". Who was in the photograph?

    His son

Mindyourlogic Riddle:  Answer:
Brothers and sisters, I have none-Riddle