Residents gathered in Washington, DC, to mourn victims of a shooting that left one person dead and four others wounded. The gunman, identified as 55-year-old Matt Lambert, was reportedly involved in a long-running dispute with building management over conditions in his apartment. Subscribe to our channel: http://bit.ly/AJSubscribe Follow us on X : https://twitter.com/AJEnglish Find us on Facebook: https://www.facebook.com/aljazeera Check our website: http://www.aljazeera.com/ Check out our Instagram page: https://www.instagram.com/aljazeeraenglish/ Download AJE Mobile App: https://aje.news/AJEMobile