Simone Biles is adamant about the distinction between her biological mother and her “Mom.” (Damir Sagolj/Reuters)

This post has been updated.

NBC’s Al Trautwig apologized Monday for a comment he made Sunday about the adoptive parents of U.S. gymnast Simone Biles during the network’s coverage of the Rio Olympics competition. Trautwig was ripped on social media for calling Biles’s adoptive parents her grandparents and he went on to say in a tweet that was deleted (but captured by a number of people on social media): “They may be mom and dad but they are NOT her parents.”

“I regret that I wasn’t more clear in my wording on the air,” Trautwig said in an emailed statement from NBC Sports obtained by USA Today. “I compounded the error on Twitter, which I quickly corrected. To set the record straight, Ron and Nellie are Simone’s parents.”

NBC noted in its statement that the network “became aware of the situation last night and addressed it with Al quickly.”

Biles and her younger sister were adopted out of foster care by their maternal grandfather, Ron Biles, and his wife, Nellie, when Biles’s birth mother struggled with drugs and alcohol. Biles, who remains in contact with her birth mother, calls Ron and Nellie “Mom and Dad” and Aimee Boorman, Biles’s longtime coach, attempted to correct Trautwig on Twitter.