An 18-year-old born in Texas was released from Immigration and Customs Enforcement detention on Tuesday after being wrongfully held for more than three weeks, his attorney said.

Francisco Erwin Galicia, a high school senior in Edinburg, Texas, had been held in custody, first by Customs and Border Protection and then by ICE, since late June, his attorney told The Associated Press .

In a joint statement released on Wednesday, ICE and CBP confirmed Galicia was released, but said an investigation remains ongoing.