A Bundeswehr military aircraft flying at supersonic speed triggered a loud bang early on Friday evening, which could be heard in large parts of the Rhine-Main area.
Shortly before 5.30 p.m. the windows in Frankfurt trembled.
As ear witnesses testify, the sound could also be heard in Wiesbaden and Darmstadt.
According to the Frankfurt police, the bang came from a military aircraft that broke the sound barrier.
The German air traffic control confirmed this.
According to a police spokesman, the jet was traveling north from southern Germany.
A supersonic boom occurs when an aircraft flies faster than the noise from its engines spreads.
Numerous residents of Frankfurt and the surrounding area exchanged information about the bang on the Internet service Twitter.
In the Vordertaunus "the whole floor wobbled", wrote one user.
Similar case in September
A few weeks ago, a similar case caused quite a stir.
At that time, two jets broke the sound barrier on their way to an alarm mission.
According to the Air Force, one reason for an alarm can be that there is no radio contact with civil aircraft.
As a rule, however, according to the information, such use is based on comparatively harmless causes.