The gunman who opened fire at Chardon High School in Ohio two years ago is appealing his life sentence.
An attorney for T.J. Lane appeared in court on Wednesday, arguing his client should not have been tried as an adult and suggesting his life sentence without parole should be thrown out, according to ABC News.
Lane was not present at the hearing.
In February 2012, the 17-year-old Lane fatally shot three students at the high school, located east of Cleveland. He was waiting for a bus to take him to another school when he decided to enter the Chardon cafeteria and open fire.
However, prosecutors claim Lane gave up his right to appeal after pleading guilty to the gruesome crime.
"Under the eyes of Ohio law (Lane's) conduct was an adult criminal act," Geauga County Prosecutor James Flaiz wrote in response to the appeal.
Daniel Parmertor, 16, Demetrius Hewlin, 16, and Russell King Jr., 17, were killed. Additionally, three other students were wounded. Investigators have said Lane admitted to the shooting but said he did not determine a motive.
During his sentencing, he arrived in court with a shirt that said "killer" and made obsense motions towards the families of the victims.
Because he was a juvenile, he was not eligible for the death sentence and received three consecutive life sentences without the opportunity of parole.