London Police announced on Saturday that a 20-year old man died and another teen was injured in a knife attack that occurred in Kilburn district, north-west London.
Investigations were initiated for recognizing the motives behind the incident, besides, the police didn't identify the attacker or arresting any suspects.
However, a number of violent acts took place in London on Friday including a knife attack, at least five incidents were reported left behind 10 injured and 1 dead.
On the other hand, a number of European cities faced several violent acts recently such as Frankfurt and Brussels.