The popular teenager who was stabbed to death in South London last week was named Demarie Omare Roye.
On Sunday, the 16-year-old man died in the hospital in a serious condition.
Shortly before 3 pm last Friday, he was taken to the hospital by the public who was found injured in the street.
Police believe that he was stabbed on Bensham Manor Road near the junction of Thornton Heath and Swain Road.
An autopsy conducted on Wednesday found that his cause of death was a stab wound.
The police said that their investigation into his murder resulted in two men in Croydon Monday area.
Detectives continued to appeal to witnesses for information.
A 19-year-old man arrested on suspicion of murder is still detained in a police station in South London.
A 22-year-old man was arrested on suspicion of possession of intent to supply Class A drugs, and was subsequently arrested on suspicion of murder.
Police said he has since been released for investigation.
Chief Detective Inspector Kate Blackburn, who led the Metropolitan investigation, said: “De Marie is a young man and very popular among those who know him.
“His death caused unimaginable damage to his family and friends.
“The investigation into his murder is proceeding rapidly, and I continue to call on witnesses who were on or near Bensham Manor Road at around 2:45 pm on Friday, July 9 to contact us.
“We think De Marie may have been riding a blue mountain bike before the attack.
“Anyone who might have seen him in the area-have they cycled-or witnessed the attack, should contact the police.
“I also asked community members whether they saw dark mopeds hidden, abandoned, parked or even riding around the Thornton Heath area before and after the murder. This moped may or may not have a license plate.
“If you know where the moped is, or have any other information that might be useful to our investigation-no matter how trivial it seems-please contact us immediately.”
Anyone with information is urged to report to the police on 101 or Twitter MetCC and provide the reference number 4198/09JUL.
You can provide information to the Fight Crime Hotline anonymously by calling 0800 555 111.
