(KRON) — The accused killer of 6-year-old Jordan Cam Walker is behind bars in San Jose. Nathan Addison was booked into jail with no bail less than 24 hours ago, Santa Clara County inmate records show.

Prosecutors charged Addison on Friday with murdering the young boy, murdering Jordan’s great-grandmother, and making death threats leading up to the killings. The great-grandmother was identified in court documents as Delphina Turner.

Jordan’s grandfather told KRON4 that investigators notified him of the arrest. Addison is Jordan’s uncle. The grandfather, Morian Walker, explained, “He’s my daughter’s half-brother.”

Addison, 27, of San Jose, refused to appear in court at the Santa Clara County Hall of Justice for his arraignment Friday afternoon.

Jordan and Jordan’s great-grandmother were found dead inside their San Jose apartment on Parkmoor Avenue August 4. Both victims had been stabbed to death, police said.

Court documents obtained by KRON4 show investigators believe the boy and elderly woman were slain on the night of August 3. “A 6-year-old juvenile male was located lying on the floor immediately inside the front door. (Turner) was located several feet from the juvenile,” Police Sgt. Juan Vallejo wrote in court documents.

The double homicide scene was traumatizing for even veteran San Jose Police Department detectives, police said. Sgt. Vallejo said it appeared that the killer had cleaned-up the apartment before he left. Blood was found inside the apartment’s sink.

Turner’s daughter, who is also Jordan’s grandmother, told police that Addison may be the culprit, Vallejo wrote.

“She provided a brief statement to patrol officers and stated that her son may be responsible. Her son was identified as Nathan Addison,” Vallejo wrote. “A police records check revealed he was recently released from the Santa Clara County jail on June 29.”

Morian Walker, who was very close with Jordan, said he had not seen, nor talked to, Addison in about 20 years.

The last time Jordan talked to his grandfather was just a few days before his death. During a FaceTime video call, Jordan told Morian Walker, “I love you, I can’t wait to go swimming.”

Jordan wanted to be just like his athletic parents. “He couldn’t wait to start training, workout, and play soccer with his mom,” Morian Walker said. “This was a life taken too soon. Four generations are grieving this tragic loss.”

According to a criminal complaint filed by prosecutors, Addison sent death threats to a third victim on August 2, the day before Jordan and Turner were slain. No motive behind the killings has been released so far by investigators.

Prosecutors said Addison took advantage of a position of trust to murder “particularly vulnerable” victims.

Turner’s friend is identified in court documents as “Witness 2” and “W2.” Sgt. Vallejo said Turner’s cellphone was stolen by the killer before he fled from the area.

Sgt. Vallejo wrote, “We located numerous video surveillance footage from businesses and residences around the homicide. W2 told police she saw the suspect around (Turner’s) residence on August 3, 2023, at approximately 6 p.m. She stated he was carrying a grey bag, not wearing shoes, and he had a fixed blade knife. A review of video surveillance footage and Turner’s) cellphone location records revealed a subject leaving the area of the homicide who matched the description of the suspect. The information was dated August 4, 2023, at approximately 4 a.m. The victims were discovered deceased approximately six hours later.”

Surveillance video recorded the killer destroying evidence at a nearby Santa Clara Valley Transportation Authority train station, according to court documents.

“The shirt the suspect was wearing appeared to have dark statins on the front lower portion. It depicted the suspect seated at a VTA station near the crime, destroying several electronic items believed to be a cellphone and tablet. The victim’s cellphone location records matched the movement of the suspect as he traveled on foot away from the area of the crime scene,” Vallejo wrote.

News of the arrest comes at a time when Jordan’s mother and father are still struggling with immense grief, loss, and emotions. A GoFundMe page is raising money for grief counseling services, as well as to cover costs of Jordan’s funeral held in a San Jose church last week.

Turner’s funeral was also held in a church last week, according to her obituary.

“She was a beautiful woman, beloved mother, awesome grandmother, hip great-grandmother, and most importantly a Child of God. She was blessed to live all over the world. Hawaii and Japan were a couple places but ultimately she settled in Sunnyvale,” her obituary writes.

Turner, 71, had “unwavering love for her family,” the obituary states.

The day before Jordan and his great-grandmother were killed, Addison allegedly made death threats and tried to burn a house down, court documents show. On August 2, a woman who lived in the house said Addison put a fire extinguisher inside a dryer, a metal mug in a microwave, and placed mirrors on the floor.

The woman is identified in court documents as “Victim 3” and “V3.”

Vallejo wrote, “The suspect told V3 that he was going to burn the house down with everyone inside. V3 told us that the suspect had started two fires inside the residence, and three fires in the backyard, in the past. She was scared for her safety and believed the suspect was capable of burning her house down.”

After the microwave began sparking, another resident in the house was able to force Addison out, court documents state.

Addison has a lengthy criminal record, including resisting arrest, assaults, and burglaries, according to court documents. He also had a history of unlawfully carrying knives, police said.

After Addison was a no-show in court, the judge told his defense attorney that Addison must appear in the courtroom Monday for his arraignment.