Russia-Ukraine war: List of key events, day 1,253

A Russian drone attack in the Ukrainian capital Kyiv has killed at least four people, the Ground Forces of the Armed Forces of Ukraine said on Telegram. The debris from downed Russian drones fell near a garage cooperative, which led to the ignition of a gas pipe in a three-storey residential building. A Russian missile strike on a Ukrainian military training unit on Tuesday killed three servicemen and injured 18 more, Ukraine's Ground Forces also announced on Telegram. Russian forces shelled Ukrainian emergency service workers who had just put out a fire in the city of Orikhiv in southern Ukraine's Zaporizhia region, the State Emergency Service of Ukraine said in a post on Facebook. Ukraine's domestic security agency has detained an air force officer holding the rank of major on charges of having spied for Russia by leaking the location and suggesting strike tactics on prized, Western-donated F-16 and Mirage 2000 fighter jets.