As previously reported in the MEN, Mathias was shot himself in July 2007.
Among the verses he had written were the words: "Kill One Nigger Then Be Gone. Away From The Homeland, Move To Spain. I Want To Get To 21 Like EJ.
Mathias was stopped in the street by police in Air Max Tavas Pink Manchester just over a week after the murder but was not a suspect at the time.
be Manchester gangster who became a killer at the age of just 15
Mathias, 19, formerly of Randlesham Street, Prestwich, was given a life term and told he will serve a minimum of 18 years.
In August 2009, Greater Manchester Police (GMP) took the unusual step of naming the then youth Moses Mathias as a wanted suspect for the murder of 16 year old Giuseppe Gregory.
"I didn't know where the bangs were coming from", he said. "I didn't know what was going on. I feared for my life. When the car drove off we didn't know we'd hit it, we just thought we'd scared them away."
Mathias, formerly of Randlesham Street, Prestwich, was obsessed with gang culture and even got a tattoo pledging his allegiance to the Gooch gang.
Mathias told court that he did not know Louis Braithwaite and did not know Giuseppe's party would be at the pub that night.
Arrest Warrant after a joint investigation by the Serious Organised Crime Agency and GMP.
When detectives subsequently raided his family home in Prestwich, other rap poetry he had composed was discovered, the court heard.
He was flown back to the UK in June and four months later admitted the murder of the youngster who was gunned down in the early hours of May 11 2009 in a car outside the Robin Hood pub in Stretford.
Script on his arm reads 'Loc' a term used by Los Angeles Crips which means 'crazy', short for the Spanish slang term 'loco'.
in the car which Giuseppe was a passenger in when he was killed.
Mathias, now 18, remained at large until he was arrested in Amsterdam earlier this year on a European Air Max Thea All Black Womens
Mathias Green Nike Air Max Tavas
But just as he and Zerihun prepared for the job by cocking their weapons in a nearby alley they saw a car driving towards them, Mathias told court. He claimed he heard 'bangs', panicked, and opened fire believing the vehicle contained gangland enemies.
Rusholme raised Mathias, now 18, eventold a police officer who visited his school that he was friends with Gooch gang members and filled his Facebook pages with pictures of his encounters with them.
He denied being a member of a gang, although he admitted associating with gang members and being 'steeped' in the culture.
Travis Bailey had been arrested in suspicion of murdering Louis, but wastold he would face no charges days before the shooting at the Robin Hood.
But he disputed the prosecution's theory that the shooting was a bungled revenge attack targeting Travis Bailey, another youth who was Blue Air Max 2015
The shooting was understood to have targeted Gooch gang members in revenge for the killing of 24 year old Tyrone Gilbert, a member of rival gang the Longsight Crew, hours earlier.
Giving evidence on his version of events, he told the court that on the night of the murder he and his accomplices, Njabulo Ndlovu and Hiruy Zerihun, who are both serving life for the crime, had only planned to rob the Robin Hood.
How killer of Giuseppe Gregory fell into gangland underworld while still a schoolboy
He was found in possession of notepaper which had lyrics on it which referenced 'The Terminator' and 'Letting Shots Off'.
"I was there, and we murdered, but we didn't meant to at the time", he added.
The prosecution say that the shooting was a Gooch gang attack in revenge for the killing of Louis Brathwaite, gunned down the year before in a Withington betting shop.
The teenager, who spent two years on the run in the continent in the aftermath of the killing, admitted murder earlier this year.
Huge photographs of Mathias were beamed on to a big screen in Piccadilly Gardens in central Manchester as police also offered a 15,000 reward for information to track him down.
spoke in court about the murder publicly for the first time andclaimed the fatal shooting came about by coincidence.
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