David Cassidy reached out to the family of Suzanne Crough, who played his on-screen sister on the popular 70s series, The Partridge Family, following news of her death at the age of 52.

“I was saddened to hear of the passing of Suzanne. We didn’t know each other well as she was so young and shy during the Partridge Family years. I have always thought fondly of Suzanne and her family. My thoughts are with them at this time,” said David Cassidy on his website.

David Cassidy and The Partridge Family have found renewed interest over the past two days, but sadly it comes with the news of the death of Cassidy’s former costar and on-screen sister, Suzanne Crough, who died Monday at the age of 52.

Although no cause of death has been specified in news reports, Las Vegas police said Crough suffered “a medical episode,” and that the cause of her death was “not suspicious,” as reported by the Associated Press.

Suzanne Crough, who played Tracy in 'Partridge Family', has died at age 52: http://t.co/IR3ickIJP0 pic.twitter.com/iro8XBQ9oc

— ABC News (@ABC) April 28, 2015

“I can’t tell you the number of sacrifices she made in order for me to get through law school and for our kids,” Crough’s husband, William Condray, told the Associated Press. “She was truly a devout mother.”

Suzanne Crough was featured in commercials and on The Partridge Family, which ran on ABC from September 1970 to March 1974.

Suzanne Crough, who played the youngest daughter on "The Partridge Family," has died. http://t.co/Yenlias8wH pic.twitter.com/hXGOYQVnEb

— Variety (@Variety) April 29, 2015

“The show revolved around a widowed mother and her five children who formed a band. The series starred Shirley Jones, with her real-life stepson David Cassidy as the resident heartthrob,” said the Associated Press.

Morning! Stu & Jodie here. Whose picture did you have on your wall? We bet David Cassidy was a popular one ! pic.twitter.com/nEiSDF2mVj

— BBC Radio Stoke (@BBCRadioStoke) March 29, 2015

David Cassidy was a house-hold name in the ’70s and a pop singer with a huge fan base. In later years, the actor and singer has had a string of bad breaks and numerous DUI’s.