A magnitude 6.0 earthquake jolted Seram Island in Indonesia’s Maluku province early on Thursday, according to the German Research Centre for Geosciences (GFZ).

The European-Mediterranean Seismological Centre (EMSC) reported a slightly lower magnitude of 5.9.

The quake struck at approximately 3:40 a.m. local time at a depth of 136 kilometers, southeast of Ambon, the provincial capital. A shallower 5.9 aftershock followed near Ambon. Indonesia’s geophysics agency (BMKG) confirmed the tremor but noted no significant shaking in populated areas. Authorities issued no tsunami warning due to the deep focal point, and there were no immediate reports of casualties or damage.

The seismic event came just 24 hours after Mount Semeru, Indonesia’s tallest volcano at 3,676 meters, erupted on Java. On November 19, Semeru spewed ash plumes up to 5.6 kilometers high and sent pyroclastic flows 13 kilometers down its slopes.

The eruption prompted the highest-level alert, evacuations of 900 residents, and the rescue of 170 stranded climbers. No casualties were reported, though the eruption recalled Semeru’s deadly 2021 event that killed 51 people.

Indonesia, straddling the Pacific Ring of Fire, is one of the world’s most seismically active regions, hosting 130 active volcanoes and experiencing an average of 2,500 earthquakes annually. The back-to-back natural events underscore the country’s vulnerability to tectonic and volcanic hazards.