A boy aged 17 has been arrested on suspicion of murdering a rapper in broad daylight at the Notting Hill Carnival.
Takayo Nembhard, 21, also known by his rap name TKorStretch, was at the west London street party with his sister and friends when he was stabbed at about 8pm on August 29.
The teenage suspect was detained 120 miles away in Bristol on Saturday. He remains in police custody.
On Wednesday morning, two men, aged 23 and 18, were also arrested at houses in Bristol.
A 20-year-old woman was detained in Islington, north London on suspicion of assisting an offender, Scotland Yard said.
Those three people have subsequently been released while the investigation continues.
Detective Chief Inspector Jim Shirley, of the Metropolitan Police’s Specialist Crime Command, said: “Takayo was stabbed to death in broad daylight in front of a huge crowd of people.”
Mr Nembhard, a performer from Bristol, was killed while there were crowds of several hundred people in Ladbroke Grove, under the Westway flyover.
Paramedics took the musician to hospital where he died. The cause of death was a stab wound to the right groin femoral artery.
Mr Shirley said: “Ever since the tragic murder of Takayo, my team and I have been busy behind the scenes gathering intelligence and evidence to bring his killers to justice, and we will continue to work around the clock until they are behind bars.
“While it is positive that we have made arrests, the hard work does not stop here. We are continuing to appeal for witnesses to come forward.
“I am confident that there are people out there who have not yet spoken to us, for whatever reason that may be.
“If you saw something and have not yet spoken to us, please do so as a matter of urgency.
“Don’t do it for me, do it for Takayo’s family who are still trying to come to terms with their terrible loss.”
