A 23-year-old man has pleaded guilty to capital murder in a case that shocked Las Vegas for its brutality: the rape, torture, killing and mutilation of a 15-year-old girl abducted on her way home from school.

Javier Righetti pleaded guilty Feb. 11 with no promise that he won’t be put to death for the September 2011 slaying of Arbor View High School sophomore Alyssa Otremba, who had texted her mom that she was walking home.

A jury next month will consider whether Righetti should be executed.

Defense attorney Christy Craig says Righetti decided to spare everyone a long trial.

Righetti admits kidnapping, sexually assaulting and stabbing Otremba dozens of times before burning her corpse in northwest Las Vegas.

Prosecutors say Righetti told police he wanted to prove he was tough.