Over the weekend, Cameron Boyce, a teen idol for his roles on the Disney Channel series “Jessie” and in the Disney Channel Original Movie franchise “Descendants,” died suddenly at the age of 20, leaving many to wonder what happened.

While TMZ reported that Boyce suffered from epilepsy, which can led to seizures, an official cause of death has not been determined.

On Monday, an autopsy was performed, but the cause of death has been deferred pending “further investigation,” according to the Los Angeles County Department Medical Examiner-Coroner.

On the same day, Cameron’s father Victor took to Twitter to break his silence on the “nightmare” that every parent fears. He tweeted, “I’m overwhelmed with the love and support our family has received. It really does help to ease the pain of this nightmare I can’t wake up from. I can’t thank you guys enough.”

Boyce’s roommates Karan Brar and Sophie Reynolds also took some time to process his death before speaking out. On Tuesday, Brar tweeted, “you were the greatest thing to have ever happened to me. i love you so much cam. wish i had more to say right now but i don’t think words will come for a while. thank you to everyone who sent such kind words my way. know i haven’t been responding but it truly means a lot.”

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