Robert Carradine's cause of death revealed

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The cause of death for Robert Carradine, the actor best known for his roles in the 1984 film "Revenge of the Nerds" and the Disney Channel series "Lizzie McGuire", has been revealed.

Carradine died by suicide, with FOX News Digital confirming the details with the Los Angeles County Medical Examiner.

Carradine died at the hospital on Feb. 23, according to the medical examiner's report. He was 71.

READ MORE: Robert Carradine, 'Revenge of the Nerds, 'Lizzie McGuire' actor, dead at 71

What they're saying:

On Monday, the actor's family confirmed his death in a statement to Deadline.

"It is with profound sadness that we must share that our beloved father, grandfather, uncle, and brother Robert Carradine has passed away," the statement began.

"In a world that can feel so dark, Bobby was always a beacon on light to everyone around him," the statement continued. "We are bereft at the loss of this beautiful soul and want to acknowledge Bobby’s valiant struggle against his nearly two-decade battle with Bipolar Disorder. We hope his journey can shine a light and encourage addressing the stigma that attaches to mental illness. At this time we ask for the privacy to grieve this unfathomable loss. With gratitude for your understanding and compassion."

Hilary Duff, who played Robert Carradine's on-screen daughter in "Lizzie McGuire," shared an emotional Instagram tribute for the actor on Monday night. 

"This one hurts," Duff wrote. "It's really hard to face this reality about an old friend. There was so much warmth in the McGuire family and I always felt so cared for by my on-screen parents. I'll be forever grateful for that. I'm deeply sad to learn Bobby was suffering. My heart aches for him, his family and everyone who loved him."

Robert Carradine career

Big picture view:

Carradine's career in Hollywood began over five decades ago. 

He landed his first major roles on the television series "Bonanza" in 1971 and in the John Wayne Western "The Cowboys" in 1972. He later scored roles in Martin Scorsese’s "Mean Streets," Hal Ashby’s "Coming Home" and Samuel Fuller’s World War II film "The Big Red One."

He landed his most memorable role in 1984 with "Revenge of the Nerds," in which he played head nerd Lewis Skolnick.

Carradine later starred in the Disney Channel’s "Lizzie McGuire" as Hilary Duff's on-screen dad.

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If you or a loved one is feeling distressed, call or text the 988 Suicide & Crisis Line for free and confidential emotional support 24 hours a day, 7 days a week.

CLICK HERE for the warning signs and risk factors of suicide and CLICK HERE for more on the 988 Lifeline.