Ian Alexander Jr. took his own life Wednesday, according to law enforcement, the day he turned 26.

Ian is the son of Ian Alexander Sr., who married Regina in 1997. They were together 10 years before divorcing.

Regina said, "Our family is devastated at the deepest level by the loss of Ian. He is such a bright light who cared so deeply about the happiness of others. Our family asks for respectful consideration during this private time. Thank you."

Regina and her son would sometimes walk the red carpet together for events and it was apparent how proud she was of him.

As for tributes ... they are cascading in ... "Real Housewives of Beverly Hills" star Garcelle Beauvais said, "My heart breaks for you @ReginaKing Ian was sweet & kind."

Marc Lamont Hill echoed that ... "Sending all of my love and condolences to Regina King. I pray that she's surrounded by love and healing energy."

Ian once said of Regina, "She's just a super mom. She doesn't really let bad workdays or anything come back and ruin the time that we have. It's really awesome to have a mother who I can enjoy spending time with."

When Regina turned 50 in 2021, Ian posted this on Instagram ... "Happy birthday to my co, so extremely proud of you and inspired by your love, artistry and gangsta. To be able to watch you take this lifetime by its neck and make it yours is something i will forever be grateful for. But to have you as my mother is the greatest gift I could ask for. To be all that you are while always having the time to be there, love and support me unconditionally is truly remarkable. The whole marvel universe ain't got s*** on you, your the real superhero! Love you mom! This day and everyday YO DAY!!"

And ... just a couple of months before he died, Ian posted a throwback pic of him, his mom and a friend, with the caption ... "My joys 🥰."

Ian was 26.