A Texas district attorney's office says Mexican authorities have detained a Texas teen who disappeared with his mother after video surfaced online showing he may have violated his probation for causing a drunken wreck that killed four people.

Tarrant County District Attorney's Office spokeswoman Samantha Jordan told the Fort Worth Star-Telegram (http://bit.ly/1NMFGur ) Monday night that 18-year-old Ethan Couch and his mother, Tonya Couch, were taken into custody in Puerto Vallarta, Mexico.

The Tarrant County sheriff has said he thinks the two fled in late November after video emerged showing what appears to be Ethan Couch at a party involving alcohol. He could go to prison for up to 10 years if found to have violated his probation by drinking.

At his trial, Couch's attorneys argued he suffered from "affluenza" because he had been coddled by his wealthy parents.