Popular stand-up comedian Ken Flores has died.

He was just 28-years-old.

An official cause of death has not been reported, but the Los Angeles Times reported that his body was found at his home at around 2 p.m. on Tuesday. TMZ cited law enforcement sources who said it appeared he died of a cardiac arrest.

Flores’ family shared a statement on his Instagram page.

“It is with great sadness that we confirm the untimely passing of our friend, brother and son, Kenyi Flores,” the post read. “Please respect our privacy at this time as we are all shocked and devastated by this loss.”

USA Today reported that Flores had just embarked on a nationwide “Butterfly Effect Tour” on Jan. 10. As part of that tour, he was slated to work three dates — Feb 6-8 — at the Helium Comedy Club in Philadelphia, according to his website.

The site reported that Flores got his start by posting clips to YouTube as he worked as a bank teller in his early 20s.