GFZ revises north Croatia quake strength to 5.3

GFZ German Research Center for Geosciences (GFZ) revised downward the strength of Sunday's earthquake that struck north of Zagreb, Croatia, to a magnitude of 5.3 from an earlier measurement of 6.0.

The quake struck at a depth of 10 kilometers, GFZ reiterated. Separately, the U.S. Geological Survey said the quake measured 5.4 on the Richter scale.