Mr Alexander attended Bedford High School in Leigh where he was a promising athlete.
A post on the school's Twitter page said: "Our condolences to the family of former Bedford High School student, Carlton Alexander, who has passed away."Yes. Passed away. From stab wounds…
Dannie Lowe posted: "Yesterday my best friend's world was turned upside down by the loss of her boyfriend.
"I still cannot believe this is happening.
"Not only will I look after her for you.
"I will make sure the kids never forget you, you did so much for them and was the best father figure.
"You were a good man Carlton and you had your whole life ahead of you.
"You did not deserve this. May you rest with all the other angels and be at peace
"I'll see you again sometime but until then look down on us all and pray that justice will be done and everyone stays safe."Hmmm….
Mr Alexander was discovered at 4.15am on Sunday by police officers who had been called to a "disturbance".
Exactly what happened in the early hours of Sunday morning to cause Mr Alexander to lose his life is still unclear.
Four men — two aged 29, one aged 30 and one aged 31 — were arrested and questioned on Sunday on suspicion of murder and violent disorder.
A fifth suspect, a 21-year-old man, was arrested on Monday morning on suspicion of violent disorder.Well, I don’t know what could have occurred here…
Using the stage name Kilo Carlton, Mr Alexander rapped on a record, What's Crackin Then, which was created by Bolton producer Trouble and released in April.Ah. OK. I get it now.