Prosecutors have finished closing arguments in the penalty phase for a man convicted in the Phoenix area's Serial Shootings case.
Prosecutors told Maricopa County Superior Court jurors in closing arguments Tuesday that they weren't bound to impose a more lenient sentence of life in prison for Samuel Dieteman.
Prosecutor Vince Imbordino says it's too late for Dieteman to redeem himself. He says Dieteman dismissed the chance to stop co-defendant Dale Hausner from killing people earlier.
Defense attorneys asked jurors earlier to spare Dieteman's life.
Dieteman was a key witness against Hausner, who was handed six death sentences earlier this year for the random 14-month shooting spree.
Dieteman pleaded guilty to two of the six murders linked to the attacks in 2005 and 2006.
Dieteman says he accepted a plea deal in order to move on to his sentence and testify against Hausner.