Luke Perry has been hospitalized in Los Angeles after reportedly suffering from a stroke. The actor is said to be under observation and his condition is not yet known. Paramedics were called to the Riverdale star's home in Sherman Oaks this morning.

Perry plays Fred Andrews on the CW's popular series, which is in its third season. There was speculation about whether or not Perry would return for Fox's 90210 reboot that was just announced yesterday. So far cast members that have signed on include Jason Priestley, Jennie Garth, Ian Ziering, Gabrielle Carteris, Brian Austin Green and Tori Spelling.

More to come on this story as details emerge.