The victim has been named locally as Joshua Folkes, or "Money J" as he was known to his friends. Friends have left cards and flowers at the crime scene. One read:
Rest in perfect peace and you be happy. I hope you're all right up there. Never forgotten.
Another simply said
There has also been an outpouring of grief on social media. On Facebook, Kate Louise Williams said:
This morning we say good night to Joshua stabbed to death last night our thoughts are with family and friends today.
More top news
For thousands of families, today is the day they find out whether their 11-year-olds will go to the secondary school of their choice.
A dangerous "charmer" who murdered his girlfriend over an obsession she was having an affair on Facebook has been sentenced to life.
EastEnders star Danny Dyer is set to marry his long-term girlfriend after she proposed to him ... and Katie Hopkins isn't happy.