Overview

• MetMalaysia reported a magnitude-2.5 tremor around 8pm on Aug 28, 13km north of Segamat at a depth of 10km, with tremors felt in Johor.
• Federal Territories Minister Zaliha Mustafa called for calm, noting it was the fourth incident since Aug 24 and that no injuries or property damage were reported.
• The Aug 27 magnitude-3.2 event occurred about 18km from Segamat at shallow depth and was assessed along the Mersing Fault Zone, which MetMalaysia described as an aftershock to Sunday’s quakes.
• JMG says the sequence reflects shallow crustal activity on local faults influenced by stress from the Sunda Subduction Zone, underscoring a low but recurring seismic risk.
• Authorities pledged stronger seismic monitoring, fault mapping and early warning work, while Fire and Rescue teams are on nationwide alert and reported no distress calls after the Aug 27 tremor; the public has been asked to submit felt reports via an online form.