ALBUQUERQUE, N.M. (AP) -- Jurors in Albuquerque heard opening statements as the penalty phase began Monday in the capital murder trial of John McCluskey. The Arizona prison inmate faces a possible death sentence for the killings in New Mexico of a retired Oklahoma couple following a 2010 Arizona prison break. The same federal court jurors who convicted McCluskey earlier this month after a four-month trial returned to decide whether he should be executed or sentenced life in prison. A prosecutor told the jurors that McCluskey's violent history and his convictions in the current case make him eligible for the death penalty. A defense lawyer said McCluskey's brain abnormalities, abuse by his father and his history of substance abuse led to an inability to control his impulses and reason like a normal person.