Uttar Pradesh Chief Minister Adityanath Yogi on Tuesday assured action in connection with the attack on Nigerian students in Greater Noida. External Affairs Minister Sushma Swaraj earlier spoke to Adityanath over the incident following which he assured of an impartial probe. Several Nigerians were beaten up in Uttar Pradesh's Greater Noida area on Monday after a class 12th student allegedly died of drug overdose. The locals have accused Africans living in the area of being responsible for the death of Manish Khari, who died on Saturday.Reports say that five Nigerians were apprehended by the police but were later let off due to lack of evidence. According to reports, Khari was found in a state of narcotic induced haze near his colony on Friday evening following which he was rushed to a hospital where he died. Although there is no clear evidence, locals suspect the Nigerians living in the building of drugging the boy.