On August 10, 2023, James Mumper Jr. pleaded guilty to voluntary manslaughter and admitted the allegation of personal use of a deadly weapon. Mumper additionally admitted three aggravating factors in the commission of this crime in connection with the stabbing that occurred at the house party in Chula Vista.
“We all grieve with the family for the loss of such a young life taken by senseless violence,” DA Stephan said. “We hope the family can find solace in the justice that was delivered through this prosecution.”
This case was prosecuted by Deputy District Attorneys Alexis Lamprea and Garret Wong.