A teenager jailed for life for murdering two British tourists in Florida is appealing against his conviction and sentence, it has been reported.
Shawn Tyson received two life sentences last month after he was convicted of the murders of James Kouzaris, 24, and James Cooper, 25, in April 16 last year.
The Herald-Tribune has reported that the teenager's public defender Carolyn Schlemmer has named nearly a dozen grounds for the conviction to be challenged.
They are said to include the racial makeup of the jury, which included 11 white jurors and one black juror, as well as the decision by Judge Rick De Furia to allow evidence that Tyson threatened people with a gun a week before the murders.
Mr Kouzaris, from Northampton, and Mr Cooper, from Hampton Lucy, near Warwick, were shot dead after they walked into a rundown public housing estate in Sarasota.
The court heard a statement from Mr Cooper's parents which said they celebrated his 25th birthday just three days before he died and were in "despair, disbelief and desolation" at losing the "love of their lives".
"We will miss him every minute of every day in a home that now feels empty," they said.
Addressing Tyson personally, Joe Hallett, a friend of James Kouzaris and James Cooper, said: "It was through your deadly action you have taken us all on a journey to hell.
"You pierced their hearts with bullets and you robbed my friends of their dignity, their freedom and their future."
The familes of James Cooper and James Kouzaris said they were "satisfied" with the jury's decision to convict Shawn Tyson of murder, but criticised aspects of the case.
"He would not have been on the streets had instructions to keep him incarcerated been passed from one judge to another," they said.
The families of murder victims James Cooper and James Kouzaris tonight said Shawn Tyson was "evil" and they had been given "a life sentence when our sons were so brutally and needlessly taken from us. Ours is a life sentence, with no chance of parole from a broken heart, and a shattered soul".
It took the jury of 8 women and 4 men about two hours to convict Shawn Tyson of murder in the first degree of James Kouzaris and James Cooper.
The 17-year-old, wearing a shirt and tie, sat emotionless as the verdict was read to the court, as did his mother Kenyatta Whitfield, in the public gallery.
A jury at Sarasota County Courthouse found 17-year-old Shawn Tyson guilty of two counts of first degree murder after James Kouzaris, 24, and James Cooper, 25, were gunned down when they drunkenly walked into a public housing estate in the Newtown area of Sarasota early on April 16 last year.
A US court has found Florida teenager Shawn Tyson guilty of murdering British tourists James Kouzaris and James Cooper in the US state last year.
Tyson was charged with two counts of first degree murder after allegedly trying to rob, then shoot dead, Kouzaris, 24, and Cooper, 25, in Sarasota.
Shawn Tyson's mother Kenyatta Whitfield has protested his innocence over the murders of UK tourists James Kouzaris and James Cooper, saying he was "framed".
The families of Kouzaris, from Northampton, and Cooper, from Warwick, were not at the trial, but friends Paul Davies and Joe Hallett attended.
The jury has retired to consider their verdict in the case of 17-year-old Shawn Tyson, accused of trying to rob, then shooting dead, UK tourists James Kouzaris and James Cooper in Florida last year.
Tyson faces two counts of first-degree murder and, if convicted, faces life in jail without parole.