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Stormzy's performance was hailed as a defining moment for British rap.
“This is a horrific incident in which a young mother has lost her life and her child is critically ill,” Detective Chief Inspector Mick Norman said.
Dozens injured including young children in stabbing attack near Japanese capital
There are calls for a shift in the government's mindset to deal with increasing knife crime in London.
London police are investigating a fifth stabbing in the same north London district that saw four other stabbings over the weekend.
Mayor of London Sadiq Khan has announced the new initiative to tackle violent crime across the UK capital, which will come into effect next week
The mayor of a city in Poland has died after he was stabbed while on stage during the finale of a large charity event on Sunday.
British counter-terrorism police are investigating a stabbing attack at a train station in northern England on New Year's Eve that left three people injured.
In a unique set of circumstances, London's Metropolitan police have arrested 39 people on "attempted murder" charges after they failed to cooperate in an investigation.
An evacuation of the building has taken place as a precaution
Police chief stabbed to death in Rodez, southern France
Seven people have been wounded, four seriously, after a man armed with an iron bar and knife went on a violent rampage in Paris on Sunday.
A man killed a 29-year-old in the French capital's Opera district on Saturday and wounded four others, before being shot dead by police.
Israeli police spokesman confirmed the attack, near the Western Wall, and says the assailant was "neutralised" but gave no further details
Euronews spoke to local people following the latest stabbing attack, targeting an Austrian soldier, outside the Iranian ambassador's residence on Sunday
Four people were targeted in two seperate knife attacks in the Austrian capital.