Boston bomber appeals death sentence, conviction

Boston bomber Dzhokhar Tsarnaev on Friday filed an appeal against his death sentence and conviction, handed down last year over one of the deadliest assaults on US soil since the 9/11 attacks. The 22-year-old is currently behind bars in America's harshest maximum security prison, ADX Florence in Colorado, until he can be moved to federal death row. In documents sent to the US federal court in Boston, his lawyers also appealed against a court's decision earlier this month denying his motion for a