Authorities in east Texas have jailed an 18-year-old man on capital murder charges in the shootings of his parents, sister and brother.

Police in the small town of Nash say officers responding to a report that a man had harmed his family and was threatening to kill himself on Tuesday found Cesar Olalde barricaded inside a home. They were told that multiple people were dead inside.

Olalde later called police, saying “he had pulled the trigger, and shot his family,” according to a probable cause affidavit by Nash Police Officer Craig Buster.

The officers persuaded Olalde to surrender and then found the bodies of his parents, Reuben Olalde and Aida Garcia, older sister Lisbet Olalde and younger brother Oliver Olalde in a bathroom.