The Bangladeshi authorities must immediately release at least 370 Bangladeshi migrant workers who were arbitrarily detained between July and September following their return to the country, said Amnesty International.  
 
In the fourth of a series of mass arrests of migrant workers for alleged criminal activity abroad, 32 people were detained in Dhaka on Sunday for "tarnishing the image of the country," due to their alleged imprisonment in Syria from where they had been deported, said the human rights organization in a press release issued on Thursday.

In this, as with three other cases, no credible evidence of criminal wrongdoing has been shown nor have any charges been brought, the release added.  

https://www.dhakatribune.com/bangladesh/2020/10/01/amnesty-bangladesh-must-release-arbitrarily-detained-migrant-workers