The immediate cause of death for Walter Koenig, the actor best known for his role as Pavel Chekov in "Star Trek: The Original Series," was cardiopulmonary arrest, also known as sudden cardiac arrest. Koenig died at the age of 90.
According to his death certificate, obtained by TMZ, chronic diastolic congestive heart failure was listed as an underlying cause, and acute renal failure was also a significant contributing condition. Koenig was cremated on October 30, and his final disposition is listed as Hollywood Forever Cemetery, where his late son, Andrew, is also interred.
Koenig's death was announced by his agency, which stated he passed away peacefully at home from "old age" with his daughter and niece by his side. The actor joined "Star Trek" in its second season and reprised his role as Chekov in seven films.
His agency's statement highlighted his connection with fans, noting that "through countless convention appearances and interactions, he shared his kindness, wit, and appreciation." The statement added that Koenig "understood what ‘Star Trek’ meant to people and embraced the community that grew around it."
William Shatner, who played Captain James T. Kirk, and George Takei, who portrayed Hikaru Sulu, are among the surviving cast members of "Star Trek: The Original Series." Shatner observed that Koenig "genuinely loved the ‘Star Trek’ community" and preferred interacting with fans at conventions. Takei shared a personal connection, noting that Koenig served as the best man at his wedding and that they shared a birthday.
Koenig was married to Judy Levitt from 1965 until her death in 2022. They had a daughter, Danielle, and a late son, Andrew.