Police arrested 31 people alleged to be involved in drugging and robbing people from Bangladesh's capital Dhaka Thursday.
Masudur Rahman, Dhaka Metropolitan Police's detective branch deputy commissioner, said the accused were arrested in overnight raids in different parts of the city, bdnews24.com reported.
The accused are known to be part of an 'Agyan Party', or a gang that drugs their targets.
They are known to trick their victims into taking drugged food, or make them sniff handkerchiefs dabbed in anaesthetic substances and decamp with their valuables.
Anaesthetic drugs and other materials have been recovered from the arrested people, said the police official.