Japan’s Supreme Court sentenced a woman to death for killing four and making more than 60 ill by poisoning a large pot of curry at a summer festival in 1998. The incident shocked Japan as crime rates are relatively low and mass killings are extremely rare.

Reports say that Supreme Court upheld a lower court death sentence on Masumi Hayashi, 47, for the crime that took place in the western Japanese city of Wakayama.

Hayashi became furious after being avoided by her neighbors and put arsenic in the curry when she was alone in the garage where it was being prepared – the Prosecutors charged.