Updated

A former high school classmate of a New York teenager found dead in a marsh near his Long Island home two years ago has been charged with murder.

Prosecutors arraigned 21-year-old Thomas Liming on Friday in the death of 18-year-old Kyle Underhill. Liming was held on $5 million cash bail or $15 million bond.

Prosecutors didn't reveal a motive. They said the Islip (EYE'-slihp) teen was found days after his parents reported him missing in a remote area behind an elementary school. They said he'd been beaten.

Defense attorney Joseph Corozzo told Newsday (http://bit.ly/1jSwbIO ) Liming didn't commit a crime and will be acquitted. He said there's a lot more to the story.

Liming surrendered to authorities Friday. Corozzo said in court Liming's known he was a suspect in the case.

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Information from: Newsday, http://www.newsday.com