The two were booked at the LAPD's Parker Center headquarters for the attempted murder of 27-year-old Roberta Dos Santo Busby.
Busby was doused with gasoline and set on fire at about 1:30 a.m. last Thursday. She suffered burns on over 60 percent of her body.
Busby, a mother of two, is in critical condition at the Grossman Burn Center. She has undergone the first of several skin grafts.
Petrillo is being in held in lieu of $500,000 bail, and Theriault-Odom is being held without bail, according to the Los Angeles County Sheriff Department's Web site.
City News Service contributed to this story.
MORE LOCAL HEADLINES FROM LOS ANGELES
USEFUL LINKS:
SEND TIP || REPORT TYPO || TWEET @abc7 || WIDGET
