The bang was powerful enough to trigger car alarms and left houses and office blocks shaking, and instantly sparked a debate online over its cause. Derbyshire Police have revealed that the loud explosion heard in Derby city and the surrounding countryside area on Thursday morning was a sonic boom caused by a Royal Air Force (RAF) jet. According to the authorities, the RAF Typhoon jet triggered the "loud bang" while moving at high speed to intercept an Air India flight from Mumbai to Newark after receiving a "security alert." The loud bang, taking place at around 9:50 am local time, caused worried residents to express their concerns online, with Twitter flooded with reports on the ground about the experience. What the heck was that loud bang in Derby? Shuck our whole building at the Wyvern Business Park. #Derby - Joe Pendlebury (@itsjoep) 27 июня 2019 г. https