A woman involved in an alleged love triangle in which authorities say she plotted with her lover to kill her husband pleaded not guilty Tuesday to charges including murder.

Sabrina Limon, 37, is accused of conspiring with Jonathan Hearn to kill 38-year-old Robert Limon. Hearn, 26, shot and killed Robert Limon at a railway building in Tehachapi in August 2014, authorities said. 

Sabrina Limon was ordered held without bail following her arraignment. In addition to murder, she is charged with conspiracy, solicitation to commit murder, attempted murder, poisoning and accessory. 

Afterward, a scuffle occurred in the court hallway when a woman who is friends with Sabrina Limon used her shoulder to knock a supporter of Robert Limon into a wall, friends of Robert Limon said. A detective ushered Sabrina's friend from the area. 

Family of Robert Limon said outside the courthouse they're hopeful that Sabrina's arrest will at last provide them with all the details of what led to his shooting. More than two dozen people showed up in support of the victim, some wearing "Justice for Rob" T-shirts and sweatshirts.

Chris Wilson, a sister of Robert Limon, said Sabrina Limon has ignored repeated attempts to talk with her over the past two years in an effort to find out more about what happened. Now the truth will finally be told, she said.

"Sabrina's behind bars, maybe for the rest of her life, who knows?" Wilson said.

Lydia Marrero, another sister of Robert Limon, spoke with tears in her eyes of the pain Sabrina Limon has caused their family. 

"It's like when my brother died she made it seem like the Limons don't exist anymore," Marrero said of Sabrina's attitude since the killing.

The sisters said Hearn at least has begun cooperating with authorities.

In custody since November 2014, Hearn accepted a plea agreement Monday for 25 years and four months in prison in exchange for his testimony at Limon's trial. A murder charge was dismissed and he pleaded guilty to voluntary manslaughter with a gun enhancement, attempted murder, poisoning and accessory charges.

Judge Charles R. Brehmer, who accepted the plea agreement, said in court the attempted murder charge stems from an incident that occurred March 19, 2014. Further details of that incident, and the poisoning allegation, were not disclosed. 

Sabrina Limon was originally arrested with Hearn in 2014 but released due to insufficient evidence. She was rearrested Friday in Camarillo. 

According to court filings, Sabrina Limon told Hearn where her husband was working and his schedule on Aug. 17, 2014, the day of the killing. The body of Robert Limon was found at the Burlington Northern Santa Fe Railway industrial complex in Tehachapi.

Investigators said in the filings that video surveillance captured Hearn fleeing the BNSF building just minutes after Robert Limon was shot twice in the head. Hearn disposed of evidence that investigators recovered, the filings said.

The next court hearing for Sabrina Limon is scheduled for Jan. 20.

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