A teenager has been stabbed to death and another seriously wounded during a violent disturbance in east London.
The Met Police was called to a fight "involving a large number of people" at Lichfield Road in Bow shortly after midnight.
Two males were taken to hospital with knife wounds but one, who is believed to be aged 17, was pronounced dead at 01:45 BST, the force said.
The second, thought to be 18 years old, remains in a critical condition.
The Met said an investigation was under way but no arrests had been made.
Det Ch Insp Mark Rogers said: "This is a highly worrying incident that has left one young man dead and another fighting for his life in hospital
"I am aware of reports saying that about a hundred people, armed with weapons were involved.
"While I would stress that our investigation is in its very early stages, this information does not appear to be wholly accurate.
"We know a significant number of people were caught up in this incident but not necessarily directly involved or armed with weapons."
The force has appealed for anyone with information to contact officers.
Follow BBC London on Facebook, Twitter and Instagram. Send your story ideas to hellobbclondon@bbc.co.uk
Metropolitan Police
70 health organisations urge Government not to abandon anti
New pay rates announced for voluntary ‘real living wage’
Renewed appeal to find missing boy who has links to Croydon
Serving and ex-Met officers found guilty of sending grossly offensive messages
Met Police: Two officers convicted over ‘offensive’ WhatsApps to Sarah Everard’s killer Wayne Couzens
Retroffiting Mitcham and Morden homes would 'create more than 1,500 jobs'
Zelensky calls for 'just punishment' for Russia
Trumps 'inflated net worth by billions' – lawsuit
Hundreds held after Russia call-up sparks protests
The Russians risking freedom to protest Putin's war
The fake sex chats fuelled by an elaborate scam
Why Brazil's election matters so much to the US
Who are Iran’s morality police?
Fact-checking Russian claims Nato troops are in Ukraine
The vloggers capturing life on India's trains
16 moments from the Queen's 16 tours of Australia. Video
The men behind a record-breaking menstrual campaign. Video
The kids living in their parents' shadows
Four cities saying no to cars
The biggest myths of the teenage brain
The jobs employers can't fill
© 2022 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.