The Riverdale actor has been hospitalized, reportedly for a stroke

Celebrities are showing their support for Luke Perry following the news of his reported stroke.

The actor’s rep told PEOPLE on Thursday that he “is currently under observation at the hospital.”

According to TMZ, paramedics responded to the Riverdale star’s home in Sherman Oaks, California at around 9:40 a.m. The call reportedly came into the fire department for someone suffering a stroke, and Perry was transported to a nearby hospital. TMZ reports that his condition is currently unclear.

Perry’s Beverly Hills, 90210 costar Shannen Doherty posted a caption-less Instagram of the two hugging during their time on the teen drama together.

Another Beverly Hills, 90210 star, Ian Ziering, also shared an Instagram regarding the “shocking news,” tweeting that “no words can express what my heart feels hearing today’s shocking news. Let us all say a prayer for his speedy recovery.”

Actress Kristy Swanson, who starred in the original Buffy: The Vampire Slayer film along with Perry, offered a prayer for the actor’s wellbeing.

“I just heard the frightening news about my dear old friend Luke Perry having a massive stroke. Luke Honey I am praying so hard for you right now, I love you so much and by God’s Grace you will get through this. Please pray for Luke.”

Credit: Debby Wong/REX/Shutterstock

Dean Cain, who appeared in four episodes of Beverly Hills, 90210, tweeted, “Praying hard for Luke Perry today. May he have a full and fast recovery.”

Actress Yvette Nicole Brown joined in on the social media support, tweeting “Nope. Hearing this news, I am not okay. NOT okay at all. Please get well soon #LukePerry. Please!”

Perry, 52, stars as Archie’s (KJ Apa) dad, Fred Andrews, on the CW’s Riverdale. According to TMZ, he had been shooting episodes recently in L.A. on the Warner Bros. lot. (Riverdale‘s main set is in Vancouver, Canada.)

Fox announced a Beverly Hills, 90210 reboot on Wednesday, the show which shot Perry to fame as Dylan McKay in the 1990s. Though his original costars Jason Priestley, Jennie Garth, Brian Austin Green, Tori Spelling and Ziering have all signed on to the new project, Perry did not.