The mother of a 12-year-old boy who was jailed at a Border Patrol facility in Clint, Texas, says in an official complaint that an agent there harassed her over social media, The Washington Post reports, including making her watch him masturbate over video chat, “all while her 12-year-old son was in custody at the Border Patrol station in Clint, Tex., where he worked.”

The woman, who is also undocumented, said in the complaint, filed with Customs and Border Protection and currently under investigation by the agency’s Office of Professional Responsibility, that her son came to the U.S. from Guatemala in April to reunite with her. She found out her son was in custody there because he called her—but their conversation was cut short and a voice she didn’t recognize spoke to her over the phone.

It was an agent, who told her, “You see, Señora, your son is okay.” She said she thought at the time he sounded “friendly,” and when he asked for her contact information to supposedly keep her updated on her son, she agreed, because, like any worried parent, she needed to know about her child. “Looking back on the conversation, the woman said that was the moment she ‘fell into his trap.’”

It was when the agent later called her that he exposed himself to her. “The woman said she escaped the Facebook call when her phone battery suddenly died,” which then appeared to anger the agent, because when she texted him the next day to plead to speak to her son, he told her, “I’m busy now.” Becoming ”fearful of retribution against her son, the woman found an immigrant legal-aid hotline through her church and called it. The hotline connected her to a legal-aid group, which promptly detailed her complaint in an email to senior CBP officials.”