Credit: WOIO/CBS

T.J. Lane, the teenager convicted of the killing three students at an Ohio high school in a shooting rampage last year, has been sentenced to life in prison without parole.

Read more about the shooting here.

Judge David L. Fuhry noted Lane's apparent lack of remorse and motive as part of his reasoning for the sentence.

Lane, who pleaded guilty to aggravated murder and other charges, appeared in a Chardon court Tuesday morning wearing a white T-Shirt with the word "killer" written on it. During the hearing, Lane also gave the courtroom the middle finger.

The three students who were wounded and relatives of the slain students were offered the chance to address the judge before the sentencing. Relatives of the slain students indicated earlier they want Lane to get the maximum sentence.

The mother of Daniel Parmertor, one of the students killed in the attack, urged the judge to sentence Lane harshly, saying, "I want him to suffer the rest of his life, the way I suffer the rest of my life without Danny."

On Feb. 26, Lane pleaded guilty to three counts of aggravated murder, two counts of attempted aggravated murder and one count of felonious assault. Daniel Parmertor and Demetrius Hewlin, both 16, and Russell King Jr., 17, were killed in the Feb. 27, 2012, rampage. Three others were seriously injured.

Lane could not have received the death penalty because he was 17 at the time of the crimes.

Lane attended an alternative school for students who haven't done well in traditional schools. He was at Chardon High School waiting for a bus there when he opened fire.