David Cassidy’s younger brother Ryan Cassidy exclusively told Breaking Celebrity News Thursday that he was "shocked and surprised" that his famous sibling had been arrested in Florida for a DUI.

Ryan, an actor and set designer, says he spoke with David just last week and said that he was "doing fine ".

As Breaking Celebrity News previously reported, the former Partridge Family star, 60, was taken into custody Wednesday night after the Florida Highway Patrol pulled him over for driving erratically in St. Lucie County.

Ryan Cassidy told us: “I’m shocked and surprised. I just spoke with David last week and he was doing fine actually.

“I am sure he will be okay though. He did not mention anything wrong, and there were no drinking problems that I know of.

“David will be fine and I am going to try and contact him today.”

BREAKING NEWS: Inside David Cassidy's DUI Arrest - Read The Police Report

Ryan Cassidy, 44, has a close relationship with his brother and contributed on David Cassidy’s autobiography Could It Be Forever.