The lawyer for a United Airlines passenger who was beaten and dragged from a flight by airport security guards said Thursday his client lost two teeth, suffered a broken nose and concussion, and might need reconstructive surgery. Dr. David Dao sustained the injuries after the airline ordered him to leave his seat on a Kentucky-bound flight last Sunday, saying it was overbooked, and then called in Chicago Department of Aviation security officers to forcibly remove the 69-year-old physician when he refused. At a press conference Thursday, Dr. Dao’s daughter, Crystal Dao Pepper, said the incident has left her family scarred.

Crystal Dao Pepper: “It has been a very difficult time for our entire family, especially my dad. And we are truly grateful for your support. What happened to my dad should have never happened to any human being, regardless of the circumstance.”

Dr. Dao’s lawyer said his client would “probably” sue United and the city of Chicago over the incident.