TEMPO.CO, Mataram - A 4.1 magnitude aftershock struck Lombok Island, West Nusa Tenggara, on Wednesday, August 1, at 18:04 local time. No tsunami warning was issued.

The Meteorology, Climatology and Geophysics Agency (BMKG) noted the epicenter of the quake was at 8.36 south latitude and 116.63 East Longitude. “The earthquake occurs 18 kilometers away from the northeast of East Lombok District, at the depth of 10 km,” said Mataram Geophysics Station head Agus Riyanto.

Agus said based on the epicenter, the hypocenter, and the source, the earthquake was caused by stone deformation by the activity of Flores Back Arc Thrust. “The analysis result shows that the earthquake is caused by the stone deformation by the thrust fault,” he added.

Read: Death Toll in Lombok Quake Rises to 16

The tremor was felt in Obel-obel Village, Sambelia District, East Lombok, with an intensity level of II SIG-BMKG (III MMI). The village was one of the affected regions of the 6.4 magnitude quake on Sunday.

Agus went on to say that no casualties due to the quake had been reported thus far. “However, we appeal to the people to remain calm and not influenced by irresponsible issues,” he underlined.

Earlier, tremors had occurred twice at 04:36 and at 06:25 local times with respectively 3.1 and 2.5 magnitudes.

BMKG recorded a total of 422 aftershocks jolted Lombok Island throughout Wednesday, per 17:00 local times.

ANTARA