The drugs could have been supplied to as many as 68.5 million users, according to Bukit Aman Narcotics Crime Investigation Department.

Protesters rallied across Bangladesh for a second straight day after the assassination of Sharif Osman Hadi, a key figure in last year's pro-democracy uprising.

The suspect threw multiple petrol bombs and smoke bombs at Taipei Main Station, before attacking people near Zhongshan Station. 

The Bangladeshi activist was shot on the streets of Dhaka on Dec 12 and died six days later in a Singapore hospital.