At least four people were injured, including a child, after a fresh wave of Russian drones attacked Kharkiv on the morning of Saturday, May 4, according to the State Emergency Service of Ukraine.The head of the local government, Oleg Sinegubov, said Shahed drones targeted the city. A two-story office and warehouse building was on fire as a result of falling debris, Sinegubov said.The SES told Suspilne News that the fire initially started at a warehouse and spread to the office building. 100 firefighters were involved in extinguishing the fires, SES spokesman Yevhen Vasylenko, said.Footage filmed by Suspilne showed emergency crews tackling the fire at a warehouse building in the city. Credit: Suspilne News via Storyful