Italian couple and son die at Solfatara volcano crater

A boy and his parents have died after falling into a volcanic crater at Solfatara near Naples.
What happened is still unclear, but Italian reports suggest the drama unfolded when the 11-year-old walked into a prohibited area.
When his parents tried to pull him to safety, the crater's base collapsed and they fell 1.5m (5ft). It is not known if they died from the gas fumes.
Their seven-year-old son did not enter the crater and survived.