A moderate earthquake has struck in the Guam region, but there were no reports of damage or injury, AP reported. The U.S. Geological Survey said the 5.8-magnitude temblor struck shortly after 7 p.m. Monday, Guam time, and was centered in the ocean about 125 miles southwest of Hagatna, and about 60 miles under the seabed. Guam police dispatcher Lorraine Cruz said there had been no reports of injury or damage.