Earthquake of 6.4 magnitude strikes off Guam: USGS
A technician of the French National Seism Survey Institute (RENASS) presents a graph of an earthquake. (AFP)

A 6.4 magnitude earthquake struck off the U.S. territory of Guam on Sunday, the U.S. Geological Survey said. There were no immediate reports of damage or casualties.

The quake struck 212 km southeast of Hagatna and was a relatively shallow 10 km deep.

Created by Murali Anantharaman; Editing by Nick Macfie