Ethan Couch—a.k.a. Ya Boy, a.k.a. the Affluenza Teen—was deported from Mexico on Thursday and booked into a Fort Worth, Texas, juvenile detention center, the Associated Press reports. “We’ve reached a great milestone,” Tarrant County Sheriff Dee Anderson said outside the facility.

Ethan Couch’s lawyers say that they are investigating whether the 18-year-old arrested in Mexico last month fled there, willingly violating the terms of his probation, or was forced, Reuters reports. “We are examining the facts...to determine whether he was taken voluntarily or involuntarily to Mexico,” attorney Scott…

Before making their way to Mexico’s Pacific coast, where they were eventually detained, “affluenza teen” Ethan Couch and his mother threw themselves a party, officials said Tuesday. Later, as the duo drove south, police received “dozens and dozens of calls of sightings” of them or their truck.