The nephew of a long-time San Francisco public defender is expected to appear in court today, after he was arrested Friday in her fatal stabbing.

According to the San Francisco Police Department, officers were called to a home on the 400 block of Arkansas Street at 10:54 a.m. Friday, on reports of a "possible stabbing."

When they arrived they discovered 65-year-old Marlene "Marla" Zamora "inside the residence unconscious and not breathing." She was pronounced dead at the scene.

Police say that "based on evidence obtained during the course of the investigation," 19-year-old Angelo Zamora was arrested for both the slaying and "local traffic warrants," and was booked into San Francisco County Jail. According to a spokesperson with the San Francisco Sheriff's Department, he remains in custody at San Francisco General Hospital for treatment of an undisclosed medical condition as of Tuesday morning.

According to SFPD spokesperson Officer Grace Gatpandan, "no one else is a suspect in Marla’s murder," Bay City News reports. As yet, no motive in the stabbing has been publicly announced.

As previously reported, neighbors say that Angelo was found inside the home and covered in blood when police arrived Friday. According to the Ex, Marla was Angelo's aunt, while Bay City News describes her as the alleged killer's great-aunt.

A neighbor tells SFist that Angelo had been living with Marla, and says that area residents called police after they heard screaming and saw Marla's's body in the backyard.

As we noted in an earlier report, Marla was a 29-year veteran of the Public Defender's office as their principal trial attorney. She was perhaps best known for her defense of Edwin Ramos, an undocumented immigrant from El Salvador convicted in 2012 for mistaking a San Francisco family for rival gang members and shooting them to death from a passing car in 2008 — a case that's recently received renewed attention as SF's Sanctuary City policies have faced scrutiny.

“She tried some of the toughest cases a public defender could try, including the Edwin Ramos case,” San Francisco Public Defender Adachi said Friday afternoon.

“This was a case where everybody in the city was against her and her client, but she fought that case with everything she had. She was just a tremendously caring, compassionate person.”

Expected in court at 1:30 today, Marla's nephew is now the one in need of a defender. But that person won't come from Adachi's office, as SF's PD said Friday that "For obvious reasons, our office would not be able to represent anyone charged [in this case]. Marla Zamora was one of us."

Previously: Longtime SF Public Defender Marla Zamora Stabbed To Death At Her Potrero Hill Home