Star Trek actor Leonard Nimoy has reportedly been hospitalized following complaints of severe chest pains.

Nimoy, who portrayed Mr. Spock on the original Star Trek television series from 1966-1969, was sent to the UCLA Medical Center last Thursday. Nimoy’s hospitalization follows the actor’s recent hospital visits over the past several months, and his own admittance to having chronic obstructive pulmonary disease. Nimoy said the disease most likely came from a years-long smoking habit he held.

While Nimoy’s current condition is unknown, check back in with ComicBook.com for any updates on the story.

Via TMZ.