David Lemus, 21, was killed on July 24, 2022, after a fight at a house party on Cortez Drive in Dallas turned to gunfire. His body was found in an alley behind the home; two teenagers were also shot and survived.

Authorities say 58-year-old Gustavo Monreal was critically injured and has been charged with murder and aggravated assault. Investigators report Monreal was accused of shooting Lemus and the other two teenagers, and that one of the victims shot Monreal in return. Detective Tonya McDaniel is leading the investigation, which remains active and could produce additional charges.

Anyone who was at the party or who has information about what happened that night is asked to contact investigators.