Following a Ministry of Interior Circular of January 2017, encouraging Questure to trace Nigerians, and in light of the readmission agreements signed by Italy with countries such as Tunisia, practice indicates that these nationalities are particularly targeted for detention. Also, as for Tunisians, ASGI could observe that their treatment in the hotspot of Lampedusa was different (see detention in hotspot).
According to the data published by a journalistic investigation, there are 7,054 returns made in 2019. 
Most of the returned are Tunisians and Moroccans. The Guarantor for the rights of the detained persons expressed concern about the high number of returns to Egypt (about 363 in 2019).
 Pagella Politica, Salvini non parla più di rimpatri? I dati su quanto (non) ha fatto al governo, 17 February 2020.