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Jonas Nelson Missing Person Case

Last seen in Altadena, California on Jan 20, 2019

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Victim Details

May 16, 2019

Apr 26, 2021

Jonas

Nelson

26

19

76 inches

180 lbs

190 lbs

Black / African American

Male

Jan 20, 2019

Altadena

California

Los Angeles County

91001

No

50490

Los Angeles County Sheriff's Department-Monterey Park - Homicide Bureau

Monterey Park

California

Los Angeles County

91755

Matthew Pereida

Sgt.

1 Cupania Circle, California

3238905500

County

Law Enforcement

http://www.lasd.org/about_us.html

019-00067-0751-400

Jan 7, 2019

Los Angeles County Sheriff's Department-Monterey Park - Homicide Bureau

na

Brown

Brown

Brown

Oct 16, 2026


Area Last Seen:

Case Description

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Summary based on the NamUs case record (MP57365) and 10 other sources
Jonas Elijah Nelson, a 19-year-old from Pasadena, California, was last seen on January 6, 2019. He and his father went for a hike near the Chaney Trail in Altadena, but Jonas did not return home. His father reported him missing the following day, January 7. Jonas suffers from schizophrenia and bipolar disorder, conditions that require medication, which he reportedly did not have with him at the time of his disappearance.

On January 20, 2019, an acquaintance of Jonas saw him and spoke to him in the 200 block of East Sacramento Street in Altadena. While this encounter led to an initial report that Jonas had been found, his family has had no further contact with him, and his whereabouts remain unknown. As a result, Jonas has been re-listed as a missing person, and the search for him continues.

Jonas is described as 6'4", weighing between 180 and 190 pounds, with black hair and brown eyes. At the time of his disappearance, he was wearing an orange hooded sweatshirt with reflective tape and black sweatpants. His family remains deeply concerned due to his medical conditions and the lack of any subsequent sightings or communication. Authorities are continuing to investigate his case, urging anyone with information to come forward.
Last Seen: Jan 20, 2019

Links to Additional Sources (10)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP57365
  • ‼STILL MISSING‼ Jonas Nelson (19)... - Attempt to Locate
  • Jonas Nelson | State of California - Department of Justice
  • Jonas Elijah Nelson - The Charley Project
  • Law Enforcement Needs Your Help Locating Local Missing ...
  • Jonas Elijah Nelson : r/NotForgotten - Reddit
  • LASD #MissingMonday Jonas Elijah Nelson has been ... - Instagram
  • Altadena teen missing since early January | News - Pasadena Weekly
  • Los Angeles County Sheriff - Nextdoor
  • ‼STILL MISSING‼ Jonas Nelson (19)... - Attempt to Locate ...

    • Possible Unidentified Matches (3)

    Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

    79%Possible
    John Doe — Commerce, California
    UP148343 • Found Jul 21, 2025
    View case
    Sex ✓Male
    Age 85%Est. 25–50 vs 19 when missing
    Race 100%Black
    Location 99%15 mi away, same county
    TimingFound 6 years after last seen
    Height 100%6'0"–6'5" vs 6'4"
    Weight 0%300–350 lb vs 180–190 lb
    Hair 100%Brown vs Brown
    Eyes 100%Brown vs Brown
    77%Possible
    John Doe — Los Angeles, California - unidentified case UP81218
    John Doe — Los Angeles, California
    UP81218 • Found May 21, 2021
    View case
    Sex ✓Male
    Age 50%Est. 26–40 vs 19 when missing
    Race 100%Black
    Location 99%14 mi away, same county
    TimingFound 2 years after last seen
    Height 100%6'0"–6'3" vs 6'4"
    Weight 100%150–165 lb vs 180–190 lb
    Hair 40%Bald vs Brown
    Eyes 100%Brown vs Brown
    76%Possible
    John Doe — Hawthorne, California - unidentified case UP132198
    John Doe — Hawthorne, California
    UP132198 • Found Aug 7, 2024
    View case
    Sex ✓Male
    Age 100%Est. 18–25 vs 19 when missing
    Race 100%Black
    Location 96%24 mi away, same county
    TimingFound 6 years after last seen
    Height 36%5'8"–5'11" vs 6'4"
    Weight 100%150–200 lb vs 180–190 lb
    Hair 60%Black vs Brown

    These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

    Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.

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    Forum Posts (2)

    Hey everyone, I was thinking about how weather conditions might play or have played a role in... ...Read More
    09/23/2024
    I've been following Jonas Nelson's case closely, and something that's been puzzling me is the... ...Read More
    05/09/2024

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