Three university students has been arrested for making a pip bomb at an apartment in Mong Kok. The bomb have to be detonated through controlled explosion by the police.
Three university students are arrested in Mong Kok. Later another explosive lab in Shueng Shui has been busted by the polices, where they arrested another suspect.
Protesting gear has also been found on site.
The blast during the controlled explosion was so powerful that it left a hole at the lift door.