Nick Reiner, 32, charged after Rob Reiner and wife Michele Singer Reiner found dead at Los Angeles home on Sunday

Nick Reiner has been charged with two counts of first-degree murder in the killing of his parents, the acclaimed actor and director Rob Reiner and the photographer Michele Singer Reiner, authorities announced on Tuesday.

The 32-year-old, who is being held without bail, has been in custody since Sunday evening, hours after his sister reportedly discovered the couple’s bodies in their Los Angeles home. Police said on Sunday the couple had suffered fatal stab wounds.

“Rob Reiner was one of the greatest film-makers of his generation. His murder and his wife of more than 35 years Michele Singer Reiner’s murder are shocking and tragic. We owe it to their memory to pursue justice and accountability for the lives that were taken,” Nathan Hochman, the LA county district attorney, said in a press release announcing the charges.

“Prosecuting cases involving family violence are some of the most challenging and heart-wrenching we face because of the intimate and often brutal nature of the crimes,” Hochman added.