Our live seismometer at Valkenburg showed a signal at 05:31 (UTC 04:31) this morning. A signal was also recorded at several nearby seismic stations around that time. The signal at the Valkenburg seismometer is the clearest. These signals may be related to the collapse of the Wilhelminatoren in Valkenburg.
It is unlikely that it was an earthquake. Further investigation is needed to determine the exact relationship with the collapse of the Wilhelminatoren.