(CNN) Former USA Gymnastics trainer Debbie Van Horn, who worked with Larry Nassar, was arrested at a Houston airport and accused of sexual assault of a child, prosecutors said Thursday.

Van Horn and Nassar, a former USA Gymnastics team doctor, were indicted in June on second-degree sexual assault of a child charges stemming from alleged incidents at the Karolyi Ranch, where for decades numerous Olympians have trained. CNN has been unable to reach Van Horn in the months since her indictment.

Van Horn, who was getting off a plane from China, was detained by Homeland Security officials and arrested at George Bush Intercontinental Airport on a warrant issued after her indictment, according to a release from Walker County District Attorney's Office.

"Ms. Van Horn has returned to the United States to clear her name from these false charges and to restore her impeccable reputation," attorney Emily Detoto said.

Detoto indicated her client would plead not guilty at her arraignment Friday morning.

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