Nick Reiner, Rob and Michelle Reiner's son, is petitioning a Los Angeles court for access to a trust fund his parents set up. Nick Reiner is currently facing murder charges in their double homicide and needs the funds to pay for his defense. 

According to the petition Reiner's lawyers filed, their client has been denied the trust that his parents set up in 1993, even though Rob and Michelle left "unambiguous instructions" for when it was to be disbursed, NBC News reported. 

In the petition, Nick's lawyers stated that he is "devastated by their deaths," and the facts about their deaths are not at issue in the trust litigation. 

"Like anyone accused of a crime, Nick is presumed innocent, and he is entitled to mount his defense with the resources that are lawfully his own," the petition states. 

Nick Reiner was entitled to half the trust when he turned 30 and should receive the rest when he turns 35, according to the petition, which states that the distributions are "mandatory and unconditional." The trust still holds $1.5 million for Nick's sole benefit. Nick, who is 33, didn't receive the first distribution, the petition states. 

He was previously defended by Alan Jackson, who withdrew from the case because Nick couldn't afford to retain Jackson's legal services. Nick is now using a public defender assigned to him. The petition states that Nick has a defense to present and is currently unable to fund it. 

Nick Reiner has pleaded not guilty to two counts of murder in connection with his parent's killing last December. Director Rob Reiner, 78, and photographer and movie producer Michelle Reiner, 70, were found stabbed to death in their Brentwood home. Nick Reiner was arrested shortly after.