A Halloween party on the east side of Indianapolis turned deadly in the early hours of October 21, 2023, when 15-year-old Edwin Simon-Osorio was shot and killed. Officers found him inside a vehicle near North Emerson Avenue and East 21st Street just before 2 a.m.; he was pronounced dead at the scene. Investigators later determined the shooting occurred on East 20th Street.

Witnesses described a tense atmosphere and say 16-year-old Alan Peregrino was intoxicated and brandishing two firearms. According to court documents, Simon-Osorio pleaded with Peregrino to put the weapons away and Peregrino allegedly replied Na, na. Imma start shooting. Shortly after, Simon-Osorio was struck. Bullet casings at the scene were later matched to a 9mm Glock 17 linked to Peregrino; witnesses identified him in a photo array and video from the party was said to show his threatening behavior.

Peregrino was arrested after an alleged carjacking that followed the shooting and was charged with murder on June 10, 2024, along with multiple other felony counts related to the carjacking and firearm offenses. Was anyone at that party or in the neighborhood who hasn’t spoken to investigators yet present that night?