Bangladesh, April 23 -- Old criminal networks appear to have resurfaced across Dhaka and beyond, with extortion re-emerging in a more organised, technology-driven form following recent political changes.

Law enforcement and intelligence sources say the activities are no longer confined to street-level operations but have evolved into structured "three-tier" syndicates using mobile and online platforms.

Businesspeople - from major industrialists to mid-level traders-report receiving threats via phone calls, WhatsApp and Imo voice messages, as well as written notes invoking the names of alleged "top terrorists".

Victims are often instructed to make payments through bank transfers or mobile financial services such as bKash and Nagad.

Acc...