[HIGHLIGHTS] An 18-year-old is accused of killing his parents and two brothers in Texas "because they were cannibals and they were going to eat him"

César Olalde called to explain what he had done, according to investigators: "The victims had been shot in several places in the houses and drugged in the bathroom" Olalde later called police, saying he "had pulled the trigger and shot his family," according to a probable cause affidavit. "Multiple worn shell casings" were found on the floor of the house and "blood splatters on multiple surfaces," police said.

The mother was "shot repeatedly," KSLA reported.