By Kim Palmer

CHARDON, Ohio (Reuters) - An Ohio teenager pleaded guilty on Tuesday to killing three students and wounding three others in a February 2012 shooting rampage at a high school in Chardon, a small town east of Cleveland.

T.J. Lane, now 18, entered his guilty plea in Geauga County court one day before the first anniversary of the attack in the high school cafeteria. Lane had previously pleaded not guilty by reason of insanity.

Lane pleaded guilty to three counts of aggravated murder, two counts of attempted murder and one count of felonious assault. The killings were committed when Lane was 17, making him ineligible for the death penalty, but he faces a potential sentence of life in prison.

(Reporting By Kim Palmer; Editing by Alden Bentley)