A group of six African nationals attacked a taxi driver at 4.00 am on 30 May for refusing to take more passengers for travelling from Dwarka to Rajpur in Delhi, according to police.
The attack comes in the midst of rising tensions over a series of racist attacks on Africans that include the death of a Congolese national.
The Ola cab driver, identified as Nuruddin, was allegedly beaten up by six persons, including two women, following an argument, near Mehrauli, police said.
Police said Nuruddin, a resident of Kharak village, was bruised on his face and received multiple cuts and has been taken to All India Institute of Medical Sciences Trauma Centre for medical treatment.
The incident happened when since six African nationals, four men, and two women, wanted to board the car but Nuruddin, the Ola cab driver refused to carry more than four people in his cab.
Soon after the incident, five of the attackers managed to escape, leaving behind one of them, a Rwanda-based woman.
The police have filed a case and are interrogating the woman attacker. They are also scanning the CCTV footage from the area to ascertain the sequence of events.
Meanwhile, five persons have been arrested for attacking African nationals in Delhi. A fresh case has also been lodged by a brother-sister duo from Cameroon. The incident comes close on the heels of the killing of a Congolese national.