Archaeologists in the ancient Roman city of Pompeii have uncovered a painting which depicts what might be the precursor to the Italian pizza.

The flatbread depicted in the 2,000-year-old fresco "may be a distant ancestor of the modern dish", Italy's culture ministry said.

But it lacks the classic ingredients to technically be considered a pizza.

The fresco was found in the hall of a house next to a bakery during recent digs at the site in southern Italy.