In 1997, the Japanese ambassador’s mansion in Lima was taken over by a terrorist  group (Tupac Amaru rebels), where 72 hostages were held.  A chess set was delivered during the hostage crises.  Embedded in the chess pieces were tiny microphones.  This gave the Peruvian Commandos intimate knowledge of the hostage-takers’ daily routine.  The information allowed an assault by the commandos to free 71 hostages.  One hostage, supreme court judge Carlos Acuna, died from a heart attack.  All 14 terrorists were killed.