Teens accused of the stabbing death of an off-duty security guard appear in court and enter not-guilty pleas. According to reports, the guard was fatally stabbed while attempting to assist another boy during an incident involving a group of youths. The alleged offender(s) are set to face trial over the guard’s death. While the accounts describe the same core circumstances—an off-duty security guard’s attempt to help another youth and his subsequent fatal stabbing—details such as the exact number of teens involved, specific court dates, and further procedural steps are not provided in the excerpts. Both outlets state that the teens deny the charges, meaning the matter proceeds to the next legal stage for determination by a court. The reports focus on the pleading of not guilty and the alleged role of the teens in the security guard’s stabbing murder, with no additional information on motive or the evidentiary basis for the prosecution included in the provided text.