Henry Winkler lauded the late Donald Sutherland as he sent his ‘deepest sympathies’ to the Hollywood legend’s son Kiefer Sutherland.

Winkler, 78, took to X, formerly Twitter, to send Kiefer the touching message following Donald’s death at age 88.

In the message, the Happy Days alum said both he and his wife Stacey Weitzman sent Kiefer their condolences.

‘@RealKiefer Stacey and I send you our deepest sympathies .. Your dad was indeed singular . Warmly , Henry,’ he tweeted.

Winkler starred opposite Kiefer, 57, in the 1998 action thriller Ground Control.

Henry Winkler lauded the ‘singular’ Donald Sutherland as he sent his ‘deepest sympathies’ to the Hollywood legend’s son Kiefer Sutherland; Winkler and Kiefer pictured 2016

Donald Sutherland, pictured 2017, died Thursday in Miami after suffering a long illness

In the message, the Happy Days alum said both he and his wife Stacey Weitzman sent Kiefer their condolences

The late actor died Thursday in Miami after suffering a long illness, his talent agency CAA told The Hollywood Reporter. 

Kiefer announced his father’s death on Thursday with a touching tribute.

The 24 star said his father Donald, 88, ‘loved what he did and did what he loved’.

‘With a heavy heart, I tell you that my father, Donald Sutherland, has passed away. I personally think one of the most important actors in the history of film,’ Kiefer said on Instagram.

‘Never daunted by a role, good, bad or ugly. He loved what he did and did what he loved, and one can never ask for more than that. A life well live.’

Kiefer – who went on to emulate his father with starring roles in flicks such as Flatliners and Designated Survivor – shared a heartwarming image of himself as a young boy alongside his father during his heyday.

Donald’s career in Hollywood spanned decades, including appearances in The Hunger Games and the 1970s horror movie Don’t Look Now.

He won a number of awards for his eclectic array of movie and TV roles, including a supporting actor Emmy for Citizen X in 1995.

Winkler starred opposite Kiefer in the 1998 action thriller Ground Control

Kiefer announced his father’s death on Thursday with a touching tribute

Sutherland also picked up nine separate Golden Globe nominations for hits including M*A*S*H and Ordinary people, winning two.

His most recent appearance came last year as Judge Parker in Lawmen: Bass Reeves, and he was set to star in upcoming apocalyptic flick Heart Land, which is in pre-production.

Other stars who paid tribute to Donald included Michael Douglas, Rob Lowe, and Nancy Sinatra.