Conversation so far:
When was J. Paul Getty's grandson kidnapped?
On July 10, 1973, 'Ndrangheta kidnappers abducted J. Paul Getty's 16-year-old grandson
Are there any other interesting aspects about J. Paul Getty's grandson's kidnapping?
J. Paul Getty was reluctant to pay, as he felt that it could have put his other grandchildren in danger

Question: Where was he when he kidnapped?
Self-contained rewrite: Where was J. Paul Getty's grandson J Paul Getty III when he was kidnapped?