Overnight, Ukrainian forces struck the Rezonit technopark in Zubovo, Moscow Oblast, Russia, the General Staff of the Armed Forces of Ukraine reported.

In the early hours of June 4, Russian forces launched an attack on Ukraine using 95 Shahed strike drones and various decoy UAVs. Ukraine's air defense systems successfully neutralized 61 of these targets, as reported by the Air Force of the Armed Forces of Ukraine.