Many described the shock as “brief but very strong

” and reported that the ground shook suddenly, accompanied by a deep rumble.

Although no casualties or serious structural damage have been reported,

several schools have suspended classes as a precaution,

and emergency teams are inspecting key infrastructure such as bridges and hospitals.

An active seismic zone

The epicenter of the earthquake was located

near the intersection of the Pacific and North American tectonic plates ,

specifically in the San Andreas fault system ,

one of the most studied and feared in the world.