United Airlines CEO Oscar Munoz issued an apology on Tuesday amid outrage over passenger Dr. David Dao of Kentucky being dragged off an overbooked flight.

In his latest statement Tuesday, Munoz expressed his sympathies and apologized, saying that a "thorough review" of the situation and their policies will take place, the results of which will be shared by Apr. 30.

"The truly horrific event that occurred on this flight has elicited many responses from all of us: outrage, anger, disappointment. I share all of those sentiments, and one above all: my deepest apologies for what happened. Like you, I continue to be disturbed by what happened on this flight and I deeply apologize to the customer forcibly removed and to all the customers aboard. No one should ever be mistreated this way," Munoz said in a statement.

"I want you to know that we take full responsibility and we will work to make it right," he added.

Also Tuesday, attorneys for Dao issued a statement on behalf of the doctor and his family.

"The family of Dr. Dao wants the world to know that they are very appreciative of the outpouring of prayers, concern and support they have received. Currently, they are focused only on Dr. Dao's medical care and treatment," said Chicago attorney Stephen Golan of Golan Christie Taglia, adding that Dao's family has asked for privacy.

Dao, who is being treated for his injuries at a Chicago hospital, is also represented by Chicago aviation attorney Thomas Demetrio of Corboy & Demetrio.