This is a list of mass or spree killers in that committed attacks at the place they worked.
A mass murderer is typically defined as someone who kills three or more people in one incident, with no "cooling off" period, not including themselves.
[1][2] A mass murder typically occurs in a single location where one or more persons kill several others.
[3][4][5] This list does not include serial killers, members of democidal governments, or major political figures who orchestrated such actions.
(Челах, Владислав Валерьевич) Terminated a pregnancy (조준희) (Амизонд, Эхсов Тоджиддин) Rahmonov, Mehrob, 23 (Рахмонов, Мехроб) (Семенихин, Виталий) Muradov, ---, 19 (Мурадов, ---) later changed to life imprisonment Muradov committed suicide (김원제) (Ваганов, Артур) (أحمد غول) (김동민) (Кузьминых, Александр) (Шамсутдинов, Рамиль Саленгалович) (Сакалаускас, Артурас Адольфович) (Долженко, Олег) (Божков, Николай) Khismatulin, Oleg, 22 (Хисматулин, Олег) (Костадинов, Ангел) (منصور علي الدعيس) Wounded 14 people in a grenade attack on Dec. 3, 2008 (Алиев, Рамазан) (Јожеф Менедер) (Наумов, Олег Владимирович) (ზურაბ ჩხეიძემ) Kamkamidze, Petre[n 5] (პეტრე კამკამიძემ) (Бельков, Дмитрий) Bogdashin, Andrei (Богдашин, Андрей) (杜新立) Wang Zhongrong, 19 (王中荣) (Մկրտիչ Օհանյան) (शिनी मेदियो) (Смышляев, Денис) Samoilov, Yevgeny, 19 (Самойлов, Евгений) Smyshlyaev sentenced to 20 years in prison (Горбунов, Евгений) (임도빈) (Бугаков, Вячеслав) (Соловьев, Денис) (Рябчук, Артемій Юрійович) W – A basic description of the weapons used in the murders