On the morning of 14 July 2023, a stabbing occurred in a building that hosts multiple aid groups in central Leiden, located in the South Holland province. The attacker stabbed three people before fleeing the scene. Multiple police units were deployed to the scene of the stabbing and surrounding areas to search for the perpetrator, who authorities described as having a head injury and wearing a dark blue sweater and dark pants. One victim has since succumbed to his injuries, while the other two are receiving medical attention at a nearby health care facility. The motive for the attack is under investigation.