IPOH, June 27 -- The cause behind the loud booming sound and tremors reported in parts of the Ipoh district remains unknown after almost 10 days.

Perak Menteri Besar Datuk Seri Saarani Mohamad said investigations are still underway, but no specific findings have been made so far.

"The investigation has been fully handed over to the police, as it involves matters of state security.

"There is no set timeline for the investigation. The police will continue their probe until a conclusion is reached," he said after officiating the Malaysia Culinary World Cup 2025 here.

Meanwhile, Perak Department of Minerals and Geoscience Malaysia (JMG) in a statement confirmed the cause of the mysterious explosion-like sounds was not from quarry blasting...