Callahan's rep did share that only a few loved ones were able to see him for a short time given restrictions put on hospitals during the pandemic.
The Daytime Emmys posted a tribute to the star on its official Twitter page following news of the actor’s passing..
'We're devastated to share that John Callahan passed away earlier today. Sending our deepest condolences to Eva La Rue and all his loved ones,' the tweet read.
John married La Rue – his All My Children co-star - in 1996, however the couple separated in 2005. They share 18-year-old daughter, Kaya together.
'May Flights of Angels Wing You to Your Rest my Dear Friend,' the 53-year-old actress said on Instagram. 'Your bigger than life, gregarious personality will leave a hole in our hearts forever. We are devastated-My great friend, co parent partner, and loving father to Kaya.
'That big belly laugh, bear hugs, bad puns, ability to harmonize to any song, great kitchen table singing-fests, and two steppin bad a*s! “Johnny Numbers”, my All My Children soap stud, the great time keeper, Beatles fanatic ( I wish to God we could go back to “Yesterday”)...
'Kaya and I are beyond broken hearted, so stunned, sorry that my thoughts are a mess. You gave the best most beautifully written tributes, and I am at a complete loss for words right now for you.
'I hope Heaven has baseball and that your team always wins! The Yankees has just lost their biggest Fan.’
Callahan's former All My Children co-star, Kelly Ripa also paid tribute to the late actor.
'I had a really a bad weekend this weekend, Ripa told Live viewers on Monday. 'A very dear friend of mine for many, many years, almost 30 years, passed away over the weekend. He was a great actor, a really good friend. One of the funniest people I've ever met. He was the ex-husband of my first-born son's godmother, Eva LaRue. His name was John Callahan. He was 66 years old—way too young to be taken from us.'