Two plead not guilty in Montecito Heights killings of two teens

Two alleged gang members pleaded not guilty last week to killing a 19-year-old woman and her teenage friend whose bodies were found in a Montecito Heights park last year.

Jose Antonio Echeverria, 18, and Dallas Stone Pineda, 17, who is being prosecuted as an adult, are charged with two gang-motivated murders in the killings of 17-year-old Briana Gallegos and her friend, Gabriela Calzada, 19.

Their bodies were found near a hiking trail at Ernest E. Debs Regional Park on Oct. 28.

Los Angeles police Chief Charlie Beck said the women were killed in a “horrific scene.” One victim was shot, he said. Both were bludgeoned, but he declined to say with what.

The district attorney's complaint said Echeverria used a rifle to kill Calzada.

“These victims were brutally murdered,” Beck said at a news conference announcing the men’s arrests in February.  “They were known to the suspects who committed the murder. They were also specifically targeted by those suspects.”

Investigators, Beck said, believe no other people were directly involved in the killings. Authorities declined to go into further detail about a motive for the crime or how the suspects knew the victims.

Shortly after a woman discovered the bodies, an uneasiness permeated the neighborhood. Residents gathered at community meetings, questioning whether they were safe. Some feared a serial killer was on the loose, a rumor that police quickly tried to dispel.

Detectives remained tight-lipped, even as residents and reporters watched police search three homes in connection with the case in mid-November.

The case was reassigned from Hollenbeck investigators to the LAPD’s Robbery-Homicide Division, which usually investigates high-profile or complex cases.

“Literally dozens of detectives were assigned to work this case,” Beck said.

Investigators examined forensic evidence and interviewed dozens of people, he said. Echeverria was initially arrested on suspicion of shooting at an occupied vehicle.

Prosecutors also charged him with attempted murder, shooting at a car and bringing methamphetamine into a jail.

Echeverria used the moniker “Klepto” and Pineda used “Trippy,” prosecutors allege. The district attorney's office said prosecutors would decide later whether to seek the death penalty for Echeverria.

Pineda, who is charged as an adult, is ineligible for execution because of his age. If convicted, he faces a maximum sentence of life in prison. They are due back in court for a preliminary hearing June 1.

Contact the Homicide Report. Follow @latimeshomicide on Twitter.

-- Times staff writers Kate Mather, Nicole Santa Cruz and Stephen Ceasar contributed to this report.

Photo: Flowers and other mementos were placed near where the bodies of Gabriela Calzada, 19, and Briana Gallegos, 17, were found in late October at Ernest E. Debs Regional Park in Montecito Heights.