The 60-year-old man arrested for a Temple hit-and-run crash that killed a mother and son allegedly revved his pickup truck engine and ran over the victims twice, according to an arrest affidavit released this week.

Darrel Gene Holloway II surrendered himself at the Temple Police Department on March 2 after investigators believe he struck and killed Maria Marta Garza, 51, and Pedro Danny Garza, 33, near the intersection of South 1st Street and W. Avenue O just after 11 p.m.

According to the newly released affidavit, a witness told investigators he saw Holloway's truck rev its engine and run over the victims, then back up and run into each of them a second time. That witness said the truck then sped away, at which point he ran to help and called 911, according to law enforcement.

Bell County Justice of the Peace David Barfield signed an arrest warrant for Holloway on March 4, charging him with murder. He was still being held at the Bell County Jail Thursday morning on a $700,000 bond.

According to online jail records, Holloway was "homeless" and had no listed address.