Riyadh: Hundreds of illegal migrants targeted in a Saudi nationwide crackdown turned themselves in today after security forces besieged a Riyadh neighbourhood where riots had killed two people. Men, women and children lined up carrying their belongings to board police buses transferring them to an assembly centre before their deportation, a week after a seven-month amnesty expired. Police said they intervened yesterday following riots in the poor Manfuhah neighbourhood of the capital after foreigners attacked Saudis and other foreign expats with rocks and knives. One Saudi and another person, whose nationality and identity remains unknown, were killed, said a police statement carried by the SPA state news agency. Another 68 people -- 28 Saudis and 40 foreigners -- were injured and 561 were arrested. The Manfuhah district of Riyadh is home to many illegal migrants, mostly from east Africa.