Sergio Alexander Galvan, known as Alex, was 20 and from Katy, Texas when he was shot and killed on November 30, 2019 at a party held at his girlfriend’s home while her parents were out of town.

The shooter’s family said the teen acted in self‑defense, claiming he was protecting himself and his sister. Witnesses, including a cousin of Alex, disputed that version and said the teen had been drinking and had made threats earlier in the evening. The Harris County Sheriff’s Office investigated but did not establish a clear motive.

No arrests or suspects have been publicly named and the investigation remains open. If anyone at the party or who knew Alex can provide information that could clarify what happened, please come forward.