In the night leading up to April 4, explosions were heard in Kharkiv during an air raid alert, declared due to the threat of enemy missile strikes, according to Kharkiv Mayor Ihor Terekhov and Telegram channel Suspilne Kharkiv. Around 00:16, an air raid alert was declared in the Kharkiv region. Russian drones were spotted in the region, reported the chief of the Kharkiv garrison and defense forces of Kharkiv, Serhiy Melnyk. The Air Force reported about a group of Shahed drones from the northeast. At 00:59, the Air Force reported a Shahed drone from the northwest heading towards Kharkiv and urg…