Earlier on Wednesday, at around 1:30 pm, several parts of Bengaluru heard a loud sound, which was like a tremor. For hours, its cause was a big mystery. The police department said that no explosion happened. An earthquake was ruled out. The reason is now known, thanks to an official statement by the Indian Air Force.

"A statement from IAF confirms that it was an IAF fighter jet going supersonic that caused the boom over Bengaluru today," writes journalist Shiv Aroor.

"No aircraft of training command was flying in the area. However, ASTE and HAL could have been undertaking their routine test-flying, which necessitates going supersonic at times. These are done well beyond the city limits in specified sectors. However, considering the atmospheric conditions and reduced noise levels in the city during these times, the aircraft sound may become clearly audible even if it happened way out from the city," the statement says.

"The aircraft was most likely a Su-30," adds Shiv Aroor.