Assassination of Ali Sayyad Shirazi
On 10 April 1999, 6:45 a.m local time, Ali Sayyad Shirazi, the deputy chief of staff of the Iranian Armed Forces, was assassinated while leaving his home for work. He was killed by an Mojahedin-e Khalq (MEK) assailant, an Iranian opposition group, who was disguised as a street cleaner and handed Shirazi a letter just before shooting him.
Source: Wikipedia — Assassination of Ali Sayyad Shirazi (CC BY-SA 4.0)