Patna, May 30 (IANS) Bihar Deputy Chief Minister Tejashwi Yadav on Monday mocked the Bharatiya Janata Party-led central government over the recent alleged attacks on African nationals in Delhi.

"Several Africans brutally attacked in Delhi. An international shame. Who controls Delhi's law and order? What sort of "raj" is this? Name it...," Yadav tweeted on Monday. His remarks came in the wake of news about the alleged attacks on several Africans in the national capital last week.

Delhi Police on Friday registered four separate cases of assault on Africans.

A 23-year-old Congolese national Masonda Ketada Olivier was on May 20 beaten to death after a spat over hiring of an auto-rickshaw in Vasant Kunj area of south Delhi.

The BJP had earlier targetted the Bihar government for deteriorating law and order situation in the state after the murder of a Hindi daily journalist Rajdeo Ranjan in Siwan and the murder of two Lok Janshakti Party leaders in Gaya.