The family of murder victim Anthony Walker, 18, who was killed with an axe in a racist attack, has paid tribute to the "loving, caring young man".
His older sister Dominique, 20, also made an emotional plea for people to help catch the gang who attacked him in Huyton, Merseyside, on Friday night.
"If anybody knows anything, they have got to talk to the police," she said.
Police said a 17-year-old boy had been arrested. An 18-year-old held on Sunday morning has been released on bail.
An axe was found embedded in Mr Walker's skull following the attack. He died later in hospital.
Dozens of floral tributes have been left at the murder scene.
Dominique Walker begged local people to help police, "Talk to them because we need the information. I need to find out who did this to my brother."
She said her brother loved playing football and was an Arsenal fan, but his main sport was basketball and he had trials for the Liverpool and England basketball teams.
"He was a very kind, loving, caring, young man. He gave so much of his life to help other people," she added.
Mr Walker was waiting with his girlfriend at a bus stop outside the Huyton Park pub with his cousin when they were subjected to a "torrent of racial abuse" by a man.
They were attacked as they walked to another bus stop.
His girlfriend and cousin ran to get help. When they returned Anthony was slumped on the ground with massive head injuries.
He was taken to Whiston Hospital and later transferred to Walton neurological centre where he died at 0525 BST on Saturday.