SANTA ANA (CBS) — A Tustin man who once claimed to be the future king of England was likely headed for a mental institution on Thursday after a jury declared him legally insane.

KNX 1070’s Mike Landa reports the verdict comes one week after Craig Christopher Rolle was found guilty of first-degree murder in the death of his stepmother.

READ MORE: Eddie Mekka, Star Of ‘Laverne & Shirley,’ Dies At 69

Eyewitness testimony in Superior Court showed that Rolle, 24, blamed his mental problems on his father Craig Kenney and new stepmother, Tabea, 24, who he stabbed to death in 2008 at her Tustin apartment.

“She opens the door, when she sees it’s him, she tries to shut the door, and he shoulders it, forces the door open, and then stabs her 67 times and then takes off out the back door,” said Orange County prosecutor Scott Simmons.

READ MORE: Liana Wallace On 'Survivor' All-Black Alliance Falling Apart: 'Just Wanted Us To Make Top 8, Then We Can Have World War II''

Rolle suffered from a range of mental health issues, including paranoid schizophrenia, which prosecutors blamed for his claims to be the prince of Wales and that his father and stepmother were “out to kill him”.

Assistant Public Defender Robert Knox said Rolle did not understand the trial or the verdict and instead wanted to discuss trains.

MORE NEWS: Reporter’s Notebook: Suzanne Marques At The White House To Interview First Lady Jill Biden

Rolle may spend the rest of his life in a mental institution pending a hearing on April 20.