JAKARTA — An earthquake measuring 6.4 magnitude struck off the Indonesian island of Sumatra on Tuesday, the U.S. Geological Survey said, but there were no reports of damage or casualties.
The quake was 23 miles deep and centered 111 miles offshore. It was felt by people on land, but there was no panic, Indonesia’s disaster agency said. There was no word on a tsunami.
Indonesia, badly hit by the Indian Ocean tsunami in 2004, straddles the so-called Pacific Ring of Fire, a highly seismically active zone where different plates on the earth’s crust meet and create a large number of earthquakes and volcanoes.