(CNN)A Massachusetts teen convicted of beheading a classmate nearly three years ago got life in prison on Tuesday.The mother of Lee Manuel Villoria-Paulino wept as she addressed the judge during the sentencing of Mathew Borges on Tuesday. Paulino's body was discovered on the bank of the Merrimack River in December 2016, decapitated and missing his hands. During the trial, the prosecution argued that Borges was jealous because Paulino had spent time with his girlfriend. Prosecutors said Borges distracted Paulino to get him out of his house while other teens robbed it, and then killed him. CNN affiliate WCVB reported that medical examiners found 76 wounds on Paulino's body -- and that they were unable to determine whether particular wounds, including his beheading, took place before or after his death.
CNN's Evan Simko-Bednarski and Travis Nichols contributed to this report.