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Rostov-on-Don, a city in southern Russia, gained notoriety as a significant location in the horrific series of murders committed by Andrei Chikatilo, a notorious serial killer who terrorized the region during the late 1970s and early 1990s. Chikatilo's reign of terror primarily centered in and around Rostov-on-Don, where he targeted and brutally killed numerous individuals, leaving a dark mark on the city's history.