Gu Jiming

In 2002, a Chinese nuclear scientist named Gu Jiming used radioactive iridium-192 pellets in an attack on a business rival. He obtained iridium-192 and placed it above the office ceiling panels of his rival. The victim soon reported symptoms of memory loss, fatigue, appetite loss, headaches, vomiting, and bleeding gums. Another 74 staff members, including one pregnant woman, also had symptoms. Gu was convicted in 2003 and given a suspended death sentence.