A Fort Worth man is now in police custody after he beat his mother to death during an attempted "exorcism," according to Fort Worth Police.An arrest warrant affidavit says that Fort Worth Police responded to an anonymous caller’s 911 call. The caller claimed they received a photo on Snapchat of a woman on the ground covered in something red, possibly blood, according to Fox 4 in an affidavit. The caller gave the address of the person responsible for the photo and when police got there, 23-year-old Alexander Taylor Valdez answered the door holding a Bible.TEXAS HOMICIDE SUSPECT BECAME OBSESSED WITH COWORKER, MURDERED HER OVER