Canto died at the age of 42 following a private battle with appendiceal cancer, EW confirmed on Tuesday.

Among them isKiefer Sutherland, who starred alongside him in the hit political thrillerDesignated Survivor.

He was such a wonderful spirit.

DESIGNATED SURVIVOR

Kal Penn, Adan Canto, Natascha McElhone, Kiefer Sutherland, LaMonica Garrett, Maggie Q, and Italia Ricci on ‘Designated Survivor’.Bob DAmico/Disney General Entertainment Content via Getty Images

He continued, I am also heartbroken for his wife, Steph, and his two young children.

Adan, may you rest in peace.

I dont have the words just yet, shewrote on Instagram.

But my dear sweet friend Adan just gained his wings.

Forever, forever in my heart.

No one deserved this less than this sweet, brilliant, kind, and gentle man.

F— cancer.

Im so sorry for everyone hurting at this devastating loss and am beyond heartbroken for his family.

Youll be in my heart always.

FellowDesignated SurvivoralumKal Penn called the lossabsolutely heartbreaking.

He was very, very funny.

Im so lucky to have known him.

Exuded both confidence and humility effortlessly.

As stand-up as they come.

His fellow costar Paulo Costanzocalled Adanone of his favorite castmates of all time.

I was always so envious of how cool, kind, and talented he was.

And man could he ruin a take with that big laugh.

My thoughts are with his beautiful family.

This is how we met on our pilot, laughing… and we never stopped, shewrote.

This is how I will always remember you, Adan.

All my love goes to you and to your beautiful family.

Rest in peace, my friend.

He would invite me many times to ride motorcycles through the New Mexico mountains, but I never did…

I can now imagine what those rides meant to him.

Love you, my man.

“We will miss Adan dearly.”

For where your treasure is, there your heart will be also.

She concluded the post by adding, “Forever my treasure, Adan, see you soon .”