Jeff Bezos has come under fire for a late response to the deadly Amazon warehouse collapse.
At least six workers died and an unknown number are missing after an incident in Illinois.
Bezos was celebrating the third launch of Blue Origin's human spaceflight, which successfully flew six passengers to the edge of space and back.
He posted a photo of the crew smiling on their way to space. The crew is happy this morning in the training center. The post was captioned by Bezos.
The news from Edwardsville is tragic. Our thoughts and prayers are with the families and loved ones of our teammates who have died.
He said that the Amazon team will be by their side through the crisis.
Amazon and Jeff Bezos did not respond to Insider's request for comment.
Some commentators were angry with his response.
Shame on Jeff Bezos! He was in Texas today. One person said that his employees lives were lost.
A person on the social networking site said that they were struggling with their rage since Jeff Bezos blasted his rocket after the deaths of Amazon workers.
At least 70 people are feared dead in Kentucky after a tornado. The death toll from the extreme weather could reach 100 people, Kentucky Gov. Andy Beshear said during a press conference Saturday morning.