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(CNN) -- So-called "affluenza" teen Ethan Couch and his mother have been detained by Mexican authorities near a popular Pacific resort town, officials briefed on the matter told CNN. 
       Couch, 18, went missing earlier this month in Texas where he was under probation for a 2013 drunk driving crash that killed four people and drew nationwide attention over his lawyers' use of his privileged upbringing as part of their defense at trial.
       He and his mother were detained near the Mexican beach resort of Puerto Vallarta, roughly 950 miles from home, officials told CNN on Monday. 
      The teenager is expected to be turned over to the U.S. Marshals Service, which has spent weeks searching for him. A spokesman for the service declined to comment Monday.
      Couch is wanted by authorities in Tarrant County, Texas, for allegedly violating his probation. His mother, Tonya, was listed by Texas authorities as a missing person after her son's disappearance, and the authorities said they believed she was assisting him.
ABC News/Jalisco's prosecutor
(CNN) -- So-called "affluenza" teen Ethan Couch and his mother have been detained by Mexican authorities near a popular Pacific resort town, officials briefed on the matter told CNN. Couch, 18, went missing earlier this month in Texas where he was under probation for a 2013 drunk driving crash that killed four people and drew nationwide attention over his lawyers' use of his privileged upbringing as part of their defense at trial. He and his mother were detained near the Mexican beach resort of Puerto Vallarta, roughly 950 miles from home, officials told CNN on Monday. The teenager is expected to be turned over to the U.S. Marshals Service, which has spent weeks searching for him. A spokesman for the service declined to comment Monday. Couch is wanted by authorities in Tarrant County, Texas, for allegedly violating his probation. His mother, Tonya, was listed by Texas authorities as a missing person after her son's disappearance, and the authorities said they believed she was assisting him.
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CNN —  

“Affluenza” teen Ethan Couch will see 720 days behind bars – nearly two years – as a condition for his continued probation for a 2013 drunken-driving crash that killed four people and seriously injured two others.

A Texas judge in April had ordered the jail time but had given his legal team time to make an argument against the order.

On Tuesday the ruling was reaffirmed, according to Sam Jordan, communications officer for the Tarrant County District Attorney’s Office.

A hearing scheduled for May 16 was also canceled, Jordan said.

In a statement, Colleen Sheehey-Church, the national president of Mothers Against Drunk Driving, said, “After years of heartbreak, this is a small victory.”

The jail time is the latest twist in the complex and well-publicized sentence that Couch received in 2013: 10 years of probation for intoxication manslaughter, instead of prison, after his lawyers cited the now notorious “affluenza” defense, suggesting he was too rich and spoiled to understand the consequences of his actions.

As part of the 2013 sentence, Couch was always subject to possible jail time when his probation case was moved to adult court, which it did last month when he turned 19. The situation is further complicated by the fact that he’s already in jail, accused of violating probation, in part by traveling to Mexico last year.

CNN’s Jason Hanna and Jason Morris contributed to this report.