Erin Moran, Joanie Cunningham in ‘Happy Days,’ dies at 56

FILE - In this June 18, 2009 file photo, actresses Erin Moran, left, and Marion Ross pose together at the Academy of Television Arts and Sciences' "A Father's Day Salute to TV Dads" in the North Hollywood section of Los Angeles. Moran, the former child star who played Joanie Cunningham in the sitcoms "Happy Days" and "Joanie Loves Chachi," has died at age 56. Police in Harrison County, Indiana said that she had been found unresponsive Saturday, April 22, 2017, after authorities received a 911 call. (AP Photo/Matt Sayles, File)

NEW YORK (AP) — Erin Moran, the former child star who played Joanie Cunningham in the sitcoms “Happy Days” and “Joanie Loves Chachi,” has died.

Police in Harrison County, Indiana, said that she had been found unresponsive Saturday after authorities received a 911 call.

She was 56, and the cause of death has not been determined. Moran had endured numerous struggles in recent years.

Moran was already a veteran actress when in 1974 she was cast in “Happy Days” as Joanie, the kid sister to Ron Howard’s Richie Cunningham in the sitcom set in the 1950s.

She would later appear with Scott Baio in the “Happy Days” spinoff “Joanie Loves Chachi.”