Gregory Rieves, a 51-year-old retired Illinois State Police trooper, was tragically killed on January 24, 2020, in Lisle, Illinois. The incident occurred at the Humidor Cigar Lounge, where Rieves, along with two other troopers, was watching television. The shooter, identified as 51-year-old Lisa V. McMullan from Chicago, opened fire without apparent provocation. McMullan shot Rieves in the back of the head, fatally wounding him, and then fired at the other two troopers, retired Special Agent Lloyd Graham, 55, and off-duty Trooper Kaiton Bullock, 48, who sustained injuries but survived. McMullan then turned the gun on herself, dying from a self-inflicted gunshot wound.
The investigation revealed that McMullan and Rieves were acquaintances, though the exact nature of their relationship remains unclear. A search of McMullan's apartment uncovered a note and a message scrawled on the wall, which read, "I hate you...hope you die!" This message mentioned Rieves and another man who was not present at the lounge during the shooting. This discovery suggested a personal motivation behind the attack, but the exact motive remains undetermined.
The tragic event left the Illinois State Police community in mourning. Rieves, who had retired in March 2019 after 25 years of service, was remembered fondly by colleagues and family. The incident was contained to a single room within the cigar lounge, and no other patrons were harmed. The Lisle Police Department conducted the investigation, interviewing witnesses and reviewing surveillance footage to piece together the events leading up to the shooting.
No arrests were made as the shooter, McMullan, died at the scene. The investigation focused on understanding the motive and the relationship between McMullan and Rieves. The incident was classified as a murder-suicide, and no further legal actions or litigations were reported in connection with the case.
