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CLEVELAND -- The teen serving life in prison for killing three students in a school shooting rampage at Chardon High School on Feb. 27, 2012, apparently has struggled with cellblock living.

19-year-old T.J. Lane is locked up in the state prison in Lima in northwest Ohio.

According to The Plain Dealer, he was given 10 days in segregation in July for giving himself a tattoo. And he was disciplined twice for refusing cellblock assignments.

At his sentencing in March, Lane wore a T-shirt with "killer" scrawled across it and gestured obscenely as he was given three life sentences.

Lane, who pleaded guilty in the shootings, has appealed his sentence.

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Information from: The Plain Dealer, http://www.cleveland.com