Los Angeles, Oct. 27 -- Veteran actor Walter Koenig, best known for portraying Pavel Andreievich Chekov in the original "Star Trek" television series and seven "Star Trek" feature films, has passed away at the age of 90.

According to The Hollywood Reporter, Koenig's representative announced that the actor died of natural causes at his home on Sunday.

Born and raised in Manhattan to Lithuanian immigrant parents, Koenig joined Gene Roddenberry's 'Star Trek' at the beginning of its second season. He appeared in 36 of the 50 episodes broadcast during the 1967-68 and 1968-69 seasons, portraying Russian navigator Pavel Andreievich Chekov.

Koenig went on to reprise the role in the first seven "Star Trek" feature films released by Paramount be...