If reliable evidence shows that iftar actually occurred after sunset, the mistaken-early-iftar case does not apply. The same is true if suhur really ended before dawn.
A careful assessment asks: when was the food consumed, what was the true boundary, and what fact was later established?
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Kitab al-Sawm: Mistaken Dawn or Sunset, Qada and Kaffarah
If reliable evidence shows that iftar actually occurred after sunset, the mistaken-early-iftar case does not apply. The same is true if suhur really ended before dawn.
A careful assessment asks: when was the food consumed, what was the true boundary, and what fact was later established?