(CNN) Ethan Couch, known for his "affluenza" defense in his deadly drunk driving case, was arrested Thursday in Texas, accused of violating his probation again, officials said.

Couch, 22, is accused of testing positive for THC on a drug patch, the Fort Worth Star-Telegram reported, citing court records. THC, or tetrahydrocannabinol, is the primary psychoactive component of the cannabis plant.

Couch first made headlines as a teenager when he was sentenced in 2013 to 10 years of probation for a drunken driving crash that killed four people and seriously injured two others.

Prosecutors in that case sought 20 years in prison, but Couch received no prison time after a psychologist testified that Couch was a victim of "affluenza," a product of wealthy, privileged parents who never set limits for him.

The decision by the juvenile court judge to put him on probation outraged victims' families and anti-drunk driving advocates.