Police were today investigating a racist attack in which a mob armed with metal poles, bricks and sticks ambushed a group of Asian students.
Four people suffered stab wounds when they were attacked close to City University in Islington, north London.
Witnesses said two other men were also beaten in the violence, which involved up to 30 youths in St John Street last Friday evening.
Officers were also investigating an incident earlier in the day when a gang of white and black youths shouted racist abuse at a group of Asian students.
One Islamic student group said the mob incident was the culmination of a series of attacks.
The Federation of Student Islamic Societies (FOSIS) said Islamophobic and racist abuse had been shouted at students.
A Metropolitan Police spokesman said extra patrols were taking place around the university as a result of the violence.
He said special police powers have also been brought in to enable officers to stop and search potential suspects.
Detective Inspector Trevor Borley, of the Islington Police community safety unit, said: "We are taking this matter very seriously.
"We have put out reassurance patrols in the St John Street and surrounding area. In addition, we will also be carrying out Section 60 searches.
"We are appealing to members of the public who may have witnessed or have information relating to this incident to contact us on 0207 421 0107."
Three men aged 17, 18 and 19 have been arrested over the attack.Reuse content