On Sunday, Hong Kong police reported that they foiled a second bomb plot in under a week - arresting three men who were allegedly testing home-made devices and chemicals in a secluded area, according to SCMP.
According to Superintendent Suryanto Chin-chiu from the bomb squad, officers found a transmitter and a receiver at the scene and believed the devices were used to detonate the bombs at short-range using a low frequency. -SCMP
"The amount [of explosives] was not a lot. But intelligence showed there were two purposes behind the plot – one was to upgrade the power of the bombs, and the other to launch attacks at future assemblies or rallies," said Senior Superintendent Steve Li Kwai-wah.
Acting on intelligence, officers from the organised crime and triad bureau ambushed the trio in scrubland off Siu Lang Shui Road in Tuen Mun in the early hours as they carried out tests.