Nick Reiner pleaded not guilty to the killings of his parents, Hollywood director Rob Reiner and producer Michele Singer Reiner, in a Los Angeles court Monday.

The 32-year-old’s plea to charges of two counts of first-degree murder, with the special circumstance of multiple murders, was entered by his public defender, Kimberly Greene.

The charges carry a maximum sentence of life without possibility of parole or the death penalty.

Los Angeles County District Attorney Nathan Hochman, speaking to reporters after the hearing, said they are still reviewing whether to seek the death penalty. They are also still waiting for the coroner’s final report, he said.

“We take the process in which we determine whether the death penalty should be sought very seriously,” he said, adding that they will be considering all “aggravating and mitigating circumstances.”