A teenager has been stabbed to death at a home in south-east London.
The victim, 18, was pronounced dead at the scene after suffering stab injuries at a block of flats in Greenwich on Saturday night.
Officers attended the address on Prior Street at 9.41pm after receiving reports of a man who was unresponsive after being stabbed, Metropolitan Police confirmed.
A teenager, 18, was stabbed at death at a home in Greenwich (pictured) at around 9.41pm on Saturday night
The London Air Ambulance also attended the scene but the teenager was pronounced dead a short time later.
A boy, 17, has been arrested in connection with the incident and remained in police custody on Sunday morning.
The victim's next of kin have been informed and a crime scene remains in place.
A murder investigation has since been launched with detectives from the Homicide and Major Crime Command investigating alongside police in Greenwich.
The force is appealing for witnesses and those with information about the attack to contact them 101 quoting CAD 7621/8Dec or call Crimestoppers anonymously on 0800 555 111.
It came as the number of murders in the country's capital surpassed 120 when a 26-year-old man was stabbed to death in east London last month.
The growing number of murders in the capital have happened in the south and north of London
Zakaria Bukar Sharif Ali became the 123rd person to be murdered in the city this year when he was stabbed to death in the morning of November 24.
He was attacked following a night out at the Rolling Stock bar in Shoreditch when he tried to intervene in a confrontation.
Mr Ali attempted to calm a fight when he was fatally stabbed. The victim died from his injuries two hours later.
Earlier in November, in the space of a week, Rocky Djelal, 38, was fatally stabbed in Rotherhithe, 15-year-old Jay Hughes was killed in Bellingham, Malcolm Mide-Madariola, 17, was was fatally knifed in Clapham, Ayodeji Habeeb Azeez, 22, was murdered in Anerley, and John Ogunjobi, 16, was killed in Tulse Hill.
Experienced detectives say they have shocked by the volume of violent crime and ferocity of some attacks in the capital this year.