Star Trek icon Walter Koenig's cause of death at age 90 revealed as he is laid to rest at same cemetery as late actor son

Star Trek star Walter Koenig's final resting place is alongside his son Andrew Koenig who passed away in 2010.

Koenig died at age 90 on October 25 at his North Hollywood home as a result of cardiopulmonary arrest, according to a death certificate reviewed by TMZ. 

Officials said that chronic diastolic congestive heart failure had been an underlying cause with acute renal failure also noted as a contributing factor. 

His remains were cremated on October 30 and his ashes placed at the Hollywood Forever Cemetery where Andrew was interred following his death by suicide at 41.

Koenig found fame as Ensign Pavel Chekov on Star Trek, which he joined at the start of the show's second season in September 1967.

The Daily Mail has reached out to representatives for Koenig for further comment on the story. 

Star Trek star Walter Koenig died at age 90 on October 25 at his North Hollywood home as a result of cardiopulmonary arrest, according to a death certificate. Above in 2025

The star's remains were cremated and his ashes placed at the Hollywood Forever Cemetery where his son Andrew Koenig was interred following his death by suicide at 41. 

Representatives for the American actor and screenwriter, who starred in seven Star Trek feature films in addition to the original iconic television series, confirmed the news of his passing to The Daily Mail last month. 

Koenig's representatives said in a statement: 'Today we mourn the passing of Walter Koenig, whose talent, warmth, and unforgettable performances left a lasting mark on generations of fans around the world.'

The statement continued: 'Best known for his iconic role as Pavel Chekov in Star Trek: The Original Series, Walter helped inspire audiences with his optimism, humor, and adventurous spirit.'

Koenig's talent not only continued his acting career after being part of the sci-fi franchise, as he was also a screenwriter. 

'Beyond Star Trek, his long and distinguished career showcased his versatility as an actor and his genuine love for his craft,' his reps said. 

'His remarkable talent continued to shine in his later years, most recently with his performance in the short film Mr. Fleischmann, for which he received the Platinum Award for Best Actor at the 2026 Independent Shorts Awards - a fitting recognition of a lifetime devoted to his craft.'

The statement continued, 'Walter’s legacy extends far beyond the screen. Through countless convention appearances and interactions with fans, he shared his kindness, wit, and appreciation with everyone fortunate enough to meet him.

'He understood what Star Trek meant to people and embraced the community that grew around it.'

Koenig found fame as Ensign Pavel Chekov on Star Trek which he joined at the start of the show's second season in September 1967 

Above, Koenig seen with wife Judy Levitt (left) and daughter Danielle Koenig (right) at his Hollywood Walk of Fame ceremony in September 2012

The lengthy statement concluded by addressing his friends, family, anyone he worked with, and his fans around the world. 

'On behalf of all of us,' his reps said, 'we extend our deepest condolences to Walter’s family, friends, colleagues, and the millions of fans whose lives he touched over the decades.

'Thank you, Walter, for the memories, the inspiration, and for boldly going where few have gone before. Rest in peace.'  

Koenig portrayed Chekhov in 36 episodes of Star Trek from 1967 through the end of season three in 1969.

He went on to appear in seven Star Trek films including: Star Trek: The Motion Picture (1979), Star Trek II: The Wrath of Khan (1982), Star Trek III: The Search for Spock (1984), Star Trek IV: The Voyage Home (1986), Star Trek V: The Final Frontier (1989), Star Trek VI: The Undiscovered Country (1991) and Star Trek Generations (1994). 

His last time reprising his role was when he voiced President Anton Chekov in the series Star Trek: Picard in 2023. 

His last time reprising his role was when he voiced President Anton Chekov in the series Star Trek: Picard in 2023.