New documents obtained from court and school records reveal that Mad Men star Jon Hamm took part in a "violent college hazing" in 1990.

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On Thursday, Huff Post Entertainment reported that the star was a student at the University of Texas when he was involved in hazing that led to criminal charges and for the fraternity to be permanently disbanded.

Reportedly, a Sigma Nu pledge was severely beaten, dragged by a hammer and had his pants lit on fire and Hamm participated "till the very end."

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According to the report, criminal records show that he was charged with hazing and had to successfully complete probation even though he was never convicted.

When pressed for comments, neither his representative nor the creator of Mad Men, Matthew Weiner, responded.

According to documents form the lawsuit, Hamm became "mad, I mean really mad" after the 20-year-old victim failed to recite something he was told to memorize.

The former pledge was Mark Allen Sanders who reportedly said he had his jeans set on fire, had dirt shoved in his face and was struck with a paddle by Hamm.

"He rears back and hits me left-handed, and he hit me right over my right kidney, I mean square over it," Sanders said. "Good solid hit and that, that stood me right up."

After the incident, Sanders received medical care and withdrew from the school.

Four other members of the fraternity were involved and charged as they pleaded no contest to misdemeanor hazing charges. The chapter of the frat was never reopened.

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Jon hamm, Mad Men