Boston Marathon bomber Dzhokhar Tsarnaev's attorney urged a federal appeals court to throw out the 29-year-old's death sentence.
Tsarnaev is making a renewed push to avoid execution after the Supreme Court last year reinstated the death sentence imposed on him for his role in the bombing that killed three people and injured hundreds near the finish line of the marathon in 2013.
His lawyers are now challenging issues that weren't considered by the Supreme Court, including whether the trial judge wrongly denied his challenge of two jurors who defense attorneys say lied during jury selection questioning.
