RIYADH: Saudi Arabian police clashed with foreign workers in a poor district of Riyadh on Saturday, nearly a week into a visa crackdown in which thousands have been detained and one man killed by police.

Security forces in riot gear fired into the air and used truncheons to disperse large crowds as scores of men ran through the streets, some throwing stones and other objects at cars and police, according to Reuters witnesses.

Two people were killed of which one was a Saudi while the other one was unidentified, the Saudi police said in a statement later on Saturday after it detained 561 people involved in the disturbances in the Manfuhah neighborhood of southern Riyadh.

The police added that 68 people were injured. Most of the foreign workers involved in the clashes appeared to be Africans.