The jury in the Colorado theater shooting trial resumed deliberating Monday whether to keep the death penalty on the table for gunman James Holmes.

Jurors deliberated for less than an hour Thursday before taking a scheduled day off Friday.

Jurors must decide whether there are any reasons, such as Holmes' mental illness and his trouble-free youth, that mean he should be sentenced to life in prison without parole instead of to death.

If jurors unanimously agree that such factors outweigh the heinousness of the July 2012 attack that killed 12 people and injured 70 others, Holmes would be sentenced to a life term.

The same jury rejected Holmes' insanity defense and convicted him of 165 counts of murder, attempted murder and weapons charges last month.