WASHINGTON, D.C. – A Maryland teen pleaded guilty this week to possessing the deadly poison ricin in his dorm room at Georgetown University, after admitting he made the concoction while home for a school break.

In a plea agreement with prosecutors, Daniel H. Milzman admitted to possessing ricin without registering the deadly toxin with federal authorities in exchange for a recommended sentence of one to two years in prison, and three years of supervised release, the Washington Post reports.

The offense carries up to a $250,000 fine and a five-year prison sentence.

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Milzman, 19, appeared in U.S. District Court Monday wearing an orange prison-issued jumpsuit alongside his two defense attorneys. He didn’t say much, except that he suffered from depression. His family was also in attendance, but neither Milzman nor his two dozen supporters provided comment to the Post.

With time served and credit for good conduct, the student from Bethesda, Maryland could be released as early as November or December, his attorney, Danny C. Onorato, told the news site.

“Milzman was arrested in March after he led law enforcement officials to ricin in a desk drawer in his McCarthy Hall dorm room,” according to the Post.

“According to a statement of offense filed Monday with the court, on the night of the incident March 17, Milzman arranged to meet a friend, a student resident advisor, in the advisor’s room, where he pulled out a double-wrapped plastic bag and tossed it on the floor, saying it contained ricin that he had made over four days while on a school break.

“The advisor asked Milzman whether he intended to use it against an undergraduate with whom Milzman had a previous relationship, and Milzman shrugged. After he left, the advisor called police.”

The sophomore said he used castor beans from a store in Bethesda to make the toxin, and dumped the waste in the trash. Authorities contend the concoction would have killed a 220 pound person. They also allegedly found evidence Milzman searched the internet and watched episodes of Breaking Bad to learn how to make the toxin, according to the Post.

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He told police he planned on using the toxin on himself.

“Daniel Milzman put himself and others in danger by cooking up a deadly poison,” U.S. Attorney Ronald C. Machen Jr. said in a statement, the Post reports. “He is very lucky that none of his fellow students were hurt.”