Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP8423) and 4 other sources
Marcos Arrellano Zavala, a 22-year-old man, was last seen on August 30, 1998, in Willis, Texas. He was last seen at Esmerelda's Bar in the company of Guadalupe "Lupe" Pacheco and Pacheco's two adult sons, Luis and Juan Pacheco. Witnesses reported that they left together in a brown Chevrolet S-10 pickup truck, which was later found abandoned in Conroe, Texas, several days after Zavala's disappearance. Disturbingly, a pool of blood was found in the bed of the truck, which DNA testing confirmed belonged to Zavala.

The Pachecos are believed to have fled to Mexico after Zavala went missing, and neither they nor Zavala have been found since. Zavala's family, both in the U.S. and Mexico, have not heard from him since that night, and authorities presume he was the victim of foul play. Despite the passage of time, his case remains open, and law enforcement continues to seek information that could provide answers about his disappearance.

Anyone with information is encouraged to contact the Willis Police Department, as the case remains unsolved and Zavala's body has never been recovered.

Last Seen: Aug 30, 1998

Possible Unidentified Matches (9)

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.

83%Moderate
John Doe — Pasadena, Texas
UP3557 • Found Apr 12, 1999
View case
Sex ✓Male
Age 100%Est. 20–30 vs 22
Race 100%White
Location 88%53 mi away, same state
TimingFound 7 months after last seen
Height 84%5'8" vs 5'10"–6'0"
Weight 87%165 lb vs 200–230 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
81%Moderate
John Doe — Houston, Texas - unidentified case UP7699
John Doe — Houston, Texas
UP7699 • Found Jul 17, 2010
View case
Sex ✓Male
Age 100%Est. 30–45 vs 22 when missing
Race 100%White
Location 92%39 mi away, same state
TimingFound 12 years after last seen
Height 84%5'8" vs 5'10"–6'0"
Weight 100%230 lb vs 200–230 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
78%Possible
John Doe — Tomball, Texas - unidentified case UP925
John Doe — Tomball, Texas
UP925 • Found Apr 21, 2007
View case
Sex ✓Male
Age 85%Est. 30–50 vs 22 when missing
Race 100%White
Location 96%24 mi away, same state
TimingFound 9 years after last seen
Height 100%5'10" vs 5'10"–6'0"
Weight 77%154 lb vs 200–230 lb
77%Possible
John Doe — Galveston, Texas - unidentified case UP3478
John Doe — Galveston, Texas
UP3478 • Found Dec 5, 2000
View case
Sex ✓Male
Age 100%Est. 20–30 vs 22 when missing
Race 100%White
Location 78%88 mi away, same state
TimingFound 2 years after last seen
Height 52%5'6" vs 5'10"–6'0"
Weight 73%150 lb vs 200–230 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
76%Possible
John Doe — Hardin, Texas
UP13492 • Found Dec 16, 2014
View case
Sex ✓Male
Age 100%Est. 23 vs 22 when missing
Race 100%White
Location 90%48 mi away, same state
TimingFound 16 years after last seen
Height 84%6'2" vs 5'10"–6'0"
Weight 100%200 lb vs 200–230 lb
Hair 60%Brown vs Black
Eyes 0%Blue vs Brown
76%Possible
John Doe — Texas
UP3577 • Found Sep 23, 1998
View case
Sex ✓Male
Age 100%Est. 15–30 vs 22
Race 100%White
Location 80%84 mi away, same state
TimingFound 3 weeks after last seen
Height 52%5'6" vs 5'10"–6'0"
Weight 55%135 lb vs 200–230 lb
Hair 100%Black vs Black
76%Possible
John Doe — Houston, Texas - unidentified case UP136464
John Doe — Houston, Texas
UP136464 • Found Jan 6, 2025
View case
Sex ✓Male
Age 100%Est. 38–52 vs 22 when missing
Race 100%White
Location 88%54 mi away, same state
TimingFound 26 years after last seen
Height 100%5'10" vs 5'10"–6'0"
Weight 100%249 lb vs 200–230 lb
Hair 60%Brown vs Black
Eyes 0%Blue vs Brown
75%Possible
John Doe — Houston, Texas - unidentified case UP17835
John Doe — Houston, Texas
UP17835 • Found Aug 22, 2017
View case
Sex ✓Male
Age 85%Est. 40–60 vs 22 when missing
Race 100%White
Location 89%49 mi away, same state
TimingFound 19 years after last seen
Height 68%5'7" vs 5'10"–6'0"
Weight 100%220 lb vs 200–230 lb
Hair 70%Gray vs Black
Eyes 100%Brown vs Brown
75%Possible
John Doe — Texas - unidentified case UP3522
John Doe — Texas
UP3522 • Found Dec 6, 1999
View case
Sex ✓Male
Age 80%Est. 25–30 vs 22 when missing
Race 100%White
Location 91%44 mi away, same state
TimingFound 15 months after last seen
Weight 100%237 lb vs 200–230 lb
Hair 60%Brown vs Black

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.