The U.S. Geological Survey said that the quake registered at 6.9 on the Richter scale.
A surge of nearly half a meter (1.6 feet) was predicted for the nearest coastlines, the report said.
People have reportedly run to higher ground in Ternate, the largest city in the Indonesian province of North Maluku.
The Malaysian embassy in Jakarta issued a warning to its citizens.
“Malaysians in the surrounding areas (of North Sulawesi) are advised to take precautionary steps and follow the latest directions from the local authorities,” the embassy said, reported AFP.
Update on California Quakes
Meanwhile, high desert communities in Southern California on July 6 assessed the damage and braced for potentially dangerous aftershocks from a major earthquake that shook buildings, ruptured gas lines, and sparked fires near the remote epicenter of the second temblor.The powerful magnitude 7.1 earthquake rocked the Mojave Desert town of Ridgecrest, south of Death Valley National Park, as darkness fell on July 5, jolting the area with eight times more force than a 6.4 quake that struck the same area 34 hours earlier.
California Gov. Gavin Newsom placed the state Office of Emergency Services (OES) on its highest alert and requested federal assistance.
He told a news conference in Ridgecrest on July 6 that he had just gotten off a phone call with U.S. President Donald Trump, seeking a presidential emergency declaration.
“I have full confidence that the president will be forthcoming, in immediate terms, with the formal declaration,” Newsom said, flanked by first responders.
There were several minor to moderate injuries, OES Director Mark Ghilarducci told reporters.
“No reports of any fatalities, so I think we’re very lucky there,” he said.
There were reports of building fires, mostly as a result of gas leaks or gas-line breaks, Ghilarducci said.
State officials said all roads damaged by the quakes had been repaired and reopened.
Violent shaking also caused water-main breaks and knocked out power and communications to parts of Ridgecrest, home to about 27,000 people some 125 miles northeast of Los Angeles.