Leonard Nimoy, the legendary Star Trek actor known for bringing the Vulcan Mr. Spock to the big and small screens, was hospitalized last Thursday with severe chest pains, TMZ reports.

TMZ discovered on Monday that Nimoy was rushed to UCLA Medical Center after a 911 call on Thursday, February 19, 2015, and that paramedics took him to the hospital because they didn’t want to take any chances with the ailing actor, who has been in and out of hospitals several times in the last few months.

The 83-year-old actor revealed last year that he was suffering from COPD, a progressive lung disease that affects one’s ability to breathe, and beseeched the public to quit smoking, the habit in which he said caused his illness.

No further news on Nimoy is available and TMZ said that they’ve received no response as of now from Nimoy’s reps.

The actor, who played half-human half-Vulcan Mr. Spock on the original 1960’s Star Trek television series, along with its big-screen sequels, and J.J. Abrams’ 2008 film reboot, last posted to his Twitter account on Monday, February 23, 2015, with a post the day before with some of his poetry. It’s unclear whether he was posting to Twitter from the hospital or elsewhere.

A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP

— Leonard Nimoy (@TheRealNimoy) February 23, 2015

I will be sharing my poetry. Today's is, "You and I have Learned," which is in my book, These Words Are for You. LLAP pic.twitter.com/CsHAtmtDnz

— Leonard Nimoy (@TheRealNimoy) February 22, 2015

Here’s what Nimoy posted early last year after revealing that he had COPD:

I quit smoking 30 yrs ago. Not soon enough. I have COPD. Grandpa says, quit now!! LLAP

— Leonard Nimoy (@TheRealNimoy) January 30, 2014

Smokers, please understand. If you quit after you're diagnosed with lung damage it's too late. Grandpa says learn my lesson. Quit now. LLAP.

— Leonard Nimoy (@TheRealNimoy) February 6, 2014

All of us here at Geeks Of Doom send Mr. Nimoy our prayers and healing vibes and hope that if he isn’t already home that he will be home soon resting comfortably. We love you!!! LLAP!!! \\//

[Source: TMZ]

Follow me on Twitter and Instagram.