SANTIAGO, Chile >> A 6.4-magnitude earthquake rocked the region around Valparaiso, Chile on Saturday, the U.S. Geological Survey reported. No tsunami was generated.

There were no immediate reports of injuries or serious damage from the strong quake that occurred at 7:32 p.m. EDT (1:32 p.m. in Hawaii), but electricity and telephone service was interrupted in some areas. Three aftershocks were registered in the area shortly thereafter.

The seismological service initially reported the initial quake’s magnitude as 6.6, but later downgraded it to 6.4.

A preliminary report showed the quake was centered in the Valparaiso area about 11 miles west-northwest of a community called Hacienda La Calera, around 73 miles from the capital of Santiago. It had a depth of about 22 miles.