The head of government of the capital attributes the sound of the alarm to a mistake during the maintenance work of the system. Mexico is one of the countries in the world with the highest seismic activity, with more than 90 earthquakes greater than 4 degrees on the Richter scale per year.
On September 19, 2017, a 7.1 magnitude earthquake returned terror to the city, leaving 369 dead. On March 14, 1979, an earthquake of 7.6 shook the capital, causing the collapse of three buildings of the Universidad Iberoamericana.