They sneaked into Nigeria illegally and now the hands of the law have caught up with them.

400 persons were on Wednesday arrested by the Edo State Command of the Nigeria Immigration Service.

The suspects were said to have been apprehended during a mop-up exercise which started at about 4a.m. on Wednesday across the 18 local government areas of the state.

It was learnt that some of them, who were nabbed in Oredo, Ikpoba-Okha, Esan-West and Uhunmwode local government areas, had forced their way into Nigeria from neighbouring countries - Niger Republic, Mali and Chad.

Three officers of the agency were said to have sustained injuries when they were attacked by the illegal migrants during the operation.

The State Controller, NIS, David Adi, confirmed the arrest.

Those arrested will be screened and deported to their countries of origin.