Residents across Hertfordshire and London were woken in the middle of the night to a loud bang which reportedly “shook houses”.
The explosion like sound worried residents across the county with many taking to social media to find out where it came from.
However, the Metropolitan Police confirmed shortly after that there was nothing to worry about and it was a sound caused by RAF jets called a sonic boom.
The Royal Air Force confirmed that around 4am this morning (December 1), two Typhoon jets were scrambled to an aircraft which had lost communications. They intercepted the aircraft and the communications were re-established.
In a statement the Met said: “We are aware of reports of a loud bang in the north London area. There are no reports of an explosion and police are looking into the incident. There is no cause for public concern.
“The loud bang heard throughout north London and surrounding areas was the result of a sonic boom from RAF planes. There is no cause for concern.”
A sonic boom is the sound associated with the shock waves created whenever an object travels through the air faster than the speed of sound.