Libyan security authorities have launched coordinated raids across the country, targeting Sudanese refugees and migrant workers in both eastern and western regions.
Security forces conducted operations in residential neighbourhoods and public markets, detaining hundreds of people accused of violating residency regulations.
The crackdown has sparked widespread debate over the treatment of refugees and migrants, raising concerns about human rights conditions in Libya.
The arrests came as protesters gathered outside the headquarters of the United Nations High Commissioner for Refugees (UNHCR) in Tripoli, where demonstrators shut down access to the facility.
The protesters opposed what they claimed were efforts to permanently settle migrants in Libya, although no such programme has been announced.
In the eastern city of Ajdabiya, authorities said more than 200 migrants were detained by the Anti-Illegal Immigration Agency and would face deportation procedures.
Meanwhile, security forces carried out overnight raids in the western city of Tajoura, detaining dozens of people, including women and children.
Reports from local sources alleged that some Sudanese workers were assaulted during the operations, while journalists covering the events also faced intimidation.
The Sudanese Embassy said its citizens in Libya are seeking voluntary repatriation rather than long-term settlement in the country.
The United Nations has denied reports of any migrant resettlement programme in Libya, describing such claims as unfounded.
According to recent international estimates, Libya hosts nearly 500,000 Sudanese refugees who have fled the conflict in Sudan.
