Editor's note: This is a developing story and is being updated.
Ukraine's military intelligence (HUR) struck on June 28 the 1060th Material-Technical Support Center in the city of Bryansk, Ukraine's General Staff said.
The facilities store a Russian missile and drone arsenal, Ukrainska Pravda reported, citing a source in HUR.
Local residents reported hearing explosions and gun fire throughout the morning of June 28. Pictures posted on social media show smoke billowing from the area of where the centre, formerly the the 120th arsenal of the Main Missile and Artillery Directorate, is located in an industrial area in the southern part of the city.
The General Staff said it was assessing the strike as extent of the damage was not immediately clear.
Bryansk Oblast Governor Alexander Bogomaz acknowledged a drone attack on the region overnight claiming that four civilians were injured in the attack, damaging ten homes and a vehicle.
Later in the morning, Bogomaz claimed that all the drones had been downed by Russian air defense unit in a separate attack, claiming that no damage had been inflicted. He did not mention the Main Missile and Artillery Directorate in his comments.
The Kyiv Independent cannot immediately verify the reports or claims made by Russian officials.
Bryansk Oblast, located in Russia's far-west, borders Ukraine's Chernihiv and Sumy Oblast, and has been the target of various Ukrainian strikes.
Ukraine's military regularly conducts strikes onto Russian and Russian-occupied territory.
Drones operated by the Security Service of Ukraine (SBU) struck the Kirovske military airfield in occupied Crimea overnight on June 28, the SBU told the Kyiv Independent. The attack destroyed Mi-8, Mi-26 and Mi-28 attack helicopters, and a Pantsyr-S1 self-propelled anti-aircraft missile and gun system, the SBU claimed.
