Canterbury residents have taken to social media to express their confusion and fascination over a large bang heard shortly before 9am.
Locals commented on posts about the noise, claiming their windows rattled, houses shook and that it was felt in various suburbs.
“Scared the shizers out of me,” one resident said, while another mentioned they heard the boom in Woodend before hearing a “wobbling sound”.
Another resident said the noise nearly caused her to drop her coffee, describing the sound as “very, very loud”.
One resident, Kala Shaw, captured the bang on video - she was getting her son ready in the morning when she heard the loud noise.