Rest in peace, Erin Moran.
The Happy Days star died on Saturday, ET confirms. She was 56.
A police spokesperson for the Harris County Sheriff in Indiana tells ET that they received a 911 call in reference to an unresponsive female on Saturday, and that first responders found Moran deceased upon arrival. An autopsy is still pending.
Moran shot to fame in the '70s as Joanie Cunningham on Happy Days, the younger sister of Ron Howard's Richie Cunningham. She later went on to star in her own spinoff, Joanie Loves Chachi, based on her character's relationship with Chachi Arcola, played by Scott Baio.
Throughout the next several decades, Moran starred on The Love Boat, and had appearances on Murder, She Wrote and Diagnosis Murder.
The actress' former co-star, Henry Winkler, took to Twitter to remember Moran.
"OH Erin... now you will finally have the peace you wanted so badly here on earth," he wrote. "Rest In It serenely now.. too soon."
OH Erin... now you will finally have the peace you wanted so badly here on earth ...Rest In It serenely now.. too soon
— Henry Winkler (@hwinkler4real) April 23, 2017
"I am so incredibly sad to hear about Erin. She was a wonderful, sweet, caring, talented woman. As I write this I can't really comprehend this right now. A very painful loss. It gives me some comfort to know that she's with Tom, Al, Pat and Garry. Rest in peace, sweet Erin," Moran's former Happy Days co-star, Don Most, said in a statement to ET, while Anson Williams added, "Erin was a person who made everyone around her feel better. She truly cared about others first, a true angel. I will miss her so much, but know that she is in God's hands. RIP sweet angel."
"I am so, so sad to hear this. She was just a sweet, bright, bubbly, fun person. She brought joy to millions," said Moran's friend and fellow child star, Alison Arngrim.
ET also spoke to actress Marion Ross -- who played Moran's mother on Happy Days -- who told us she was "devastated" at Moran's death.
"She was so cute and bright and great on the set of our show," Ross recalled. "We would send her off to school and she would come back to the set and pick right up on what she had to do! She was so adaptable, so talented. She got cuter and cuter every year!
"In 2007, dear Florence Henderson and her daughter, Susan, Erin and I christened the Love Boat cruise ship in Athens, Greece," she added. "Again, I am devastated, but I will always remember Erin."
-- Reporting by Claudia Cagan
