Two Arrested, Missing Teen Found in Fullerton Multiple Homicide

FULLERTON, CA — Two men were arrested today, and a 17-year-old missing girl found after a trio of murders this weekend in Fullerton, California.

On Saturday, a child's emergency phone call saying her parents "had died" drew Fullerton police to a residence on South Gilbert Street. Three people were discovered dead inside. By Sunday evening, Fullerton police arrested John Acosta, a 21-year-old resident of Fort Irwin and Frank Felix, a 25-year-old of Sun Valley are in the process of being booked at Fullerton City Jail in connection with the murders, according to Fullerton Police Sgt. Jon Radus.

The Fullerton Police have also located the 17-year-old daughter of the deceased couple who went missing after the killings, according to Radus.

The original 911 call came in shortly before 8:30 a.m on Saturday, Sept. 24. Dispatchers assisting the child over the phone while the police were on the way.

Officers responded to the home in the 400 block of South Gilbert Street found two men and a woman inside a residence.

Inside the residence, bodies of two men and a woman were found, the cause of their deaths was not immediately known, according to Radus. The child who reported the bodies and two other children were inside the home, all were unharmed, he said.

The victims were identified as 34-year-old Christopher Yost, 39-year-old Jennier Goodwill Yost along with 28-year-old Arthur William Boucher.

CBS2's Adrianna Weingold reported that officers informed her that "the victims had significant, obvious signs of trauma."

Neighbors disclosed to Wiengold that the child who called 911 was in fourth grade and has two older siblings, according to the report.

"This is obviously a tragic event. The Fullerton Police Department has committed all its resources to identifying who is responsible for committing this act," Radus said. "This incident is being investigated as a multiple homicide."

This investigation is ongoing.

Fullerton police detectives asked anyone with any information regarding the deaths to call them at (714) 738-5361.

This is a developing story and will be added to as more information is made available. Please refresh this page for the latest updates.

Editor's note: The name of the Yost's 17-year-old daughter has been removed from this story.