Kyiv Hostage Situation Ends with Gunman's Death
Assailant took hostages in a supermarket before being shot dead.
Ukrainian police stormed the store after failed negotiations.
President Zelenskyy reported five dead and 10 hospitalized.
Four hostages rescued by police during intervention.
Mayor Klitschko expressed condolences for victims.
Motive remains unknown; investigation demanded.
Authorities focus on stabilizing public safety.
6 hours ago