The 2016 Hamburg stabbing attack, also referred to as Murder at the Alster or Alster Murder, was an attack on 16 October 2016 in the city of Hamburg, Germany. A 23- to 25-year-old man "of southern appearance" was named as the suspect. On 30 October 2016, the Islamic State (IS) claimed responsibility for the attack, though police later said a terrorist background or motive for the attack was "unlikely".