A mysterious loud sound around 12.30pm in the city on Monday created panic among Ludhiana residents who called up police control room and fire brigade during the day to seek information.
The impact of the high-velocity sound was such that windowpane of many buildings were shattered in some areas of the city.
Soon after the deafening sound, the city was rife with rumours that a bomb blast had occurred at Ludhiana railway station. Some rumours talked of similar incidents at the bus stand, Clock Tower, Dholewal, Aarti Chowk, Pakhowal road, Model Town and industrial area.
Police commissioner Ishwar Singh too said that he had indeed heard the loud bang. Later, as his phone started ringing and people started to inquire, he came to know about the rumours. Within no time, he asked his subordinates to clarify the situation to city residents.
Personnel deputed at PCR remained busy in the afternoon, trying to allay fears of people who flooded them with calls after hearing the loud sound.
Police said the members of the worried public asked them if a bomb blast had occurred in the city. Interestingly, PCR received double the around 2,200 calls they receive on any day in routine. Same calls were also made to the control rooms of 108 ambulance service and fire brigade.
As rumours on the loud sound persisted, police made use of social media sites on the Internet to clarify that the loud sound was probably a thunderclap, which was heard in many parts of Ludhiana.
Police advised people not to panic as no blast was reported anywhere in the city.
Naresh Vig, public relation officer with the ministry of defence, said that the sound might have emanated from an aircraft breaking sound barrier."However, there was no activity of air force in Ludhiana area on Monday, as per our information. So there is no possibility of the sound to be sonic boom," Vig said.
Dr KK Gill, assistant agricultural meteorologist, PAU said, "We tried to get information regarding the loud bang from the doppler radar set up in Patiala. But the radar recorded nothing. As of now, nothing can be said with absolute certainty but we can call it thunder activity."