( CNN ) -- A Sudanese national was killed and 17 others injured in the Saudi capital during ongoing clashes over a visa crackdown , the Saudi Press Agency reported . The death Wednesday came after two people were killed and 68 others injured Saturday in clashes between police and foreign workers , the Saudi Press Agency said . Saudi authorities began rounding up thousands of illegal foreign workers last week after the expiration of an amnesty to formalize their status . The crackdown is mainly concentrated in Manfouha , a district of the capital city , Riyadh . In light of Saturday 's clashes , a police spokesman urged workers without proper documents to surrender at a shelter in Riyadh until they could be deported . Most of the workers impacted by recent police raids are African migrants . Reports circulated last week of the death of an Ethiopian man , prompting the Ethiopian Foreign Ministry to issue a statement that it `` condemned the killing of an Ethiopian and mistreatment of its citizens residing in Saudi Arabia . '' Saudi Arabia launched a `` security campaign '' this month to crack down on workers violating visa rules . Khaled Al Maeena , editor-in-chief of the Saudi Gazette , said police are focusing on two types of undocumented immigrants . `` One is the over-stayers and who came illegally , smuggled themselves through the borders , or were smuggled in , '' he said . `` But as far as the others who have documents and have shifted from one job to another without informing the authorities , I think their position is being rectified . '' The Saudi Census Bureau does not break down the exact demographics of Manfouha . There are no official numbers yet on how many migrants are affected by the government crackdown . Images from Manfouha show dozens of migrants waiting for buses and taxis as they prepare to leave the neighborhood . Al Maeena said many Saudis welcome a crackdown on illegal immigrants , but there are questions about who will fill their jobs . `` Most of the jobs that are being done are menial jobs , '' he said . `` They are drivers . They drive septic tanks , they do work in farms . They do many jobs that the Saudis do n't . ''
A Sudanese national was killed and 17 injured this month in the Sudanese capital of Riyadh . 561 people were killed and 561 arrested this month in clashes between police and foreign workers . Riyadh launched a `` security campaign '' this month to crack down on visa violations .