On October 28, 2023, a house party in the 300 block of Roslyn Avenue in San Antonio ended in a deadly shooting that left 40-year-old Marvin Medrano and 30-year-old Jennifer Colin dead. An argument at the gathering reportedly involved a party attendee and a neighbor; the neighbor left and later returned with family members. Among those who returned was 20-year-old Raul Trevino III, who is accused of drawing a firearm in the front yard and shooting Medrano, Colin, and Medrano’s 13-year-old daughter.

Medrano, who was armed, returned fire and wounded Trevino and one of his relatives. Medrano and Colin suffered gunshot wounds to the head and were pronounced dead at the scene; the 13-year-old girl, Trevino, and his relative were taken to local hospitals with non-life-threatening injuries. Trevino is in Bexar County Jail charged with capital murder of multiple persons and aggravated assault with a deadly weapon, with bond set at $825,000. Family members say the confrontation may have grown out of an ongoing feud between two teenage girls. Medrano was remembered as a devoted father and longtime H-E-B manager; Colin as a loving aunt.

Does anyone have information about the party or the events on Roslyn Avenue that night?