Explosions sounded for 15 to 20 minutes in Kiev, which has seen a series of attacks over the past two days. Ukrainian Air Force said in a statement: "At around 20:00 local time (17:00 GMT), a Bayraktar TB2 drone spiraled out of control during a routine sortie over Kiev.
The target was destroyed" The statement said the air force believed a technical glitch likely caused the loss of control of the drone. Ukrainian accounts broadcast videos they said showed Bayrak tar fighter jet shot down by "friendly fire" over the capital Kiev.