4 suspects arrested, kilogram of fentanyl seized in series of traffic stops, BCSO says The sheriff’s office said one suspect is a confirmed gang member
Left to right: Christopher Rivera, Allyson Alvarez, Alan Segura and Erik Gonzalez. (Bexar County jail) (Copyright 2025 by BCSO - All rights reserved.)
BEXAR COUNTY, Texas – The Bexar County Sheriff’s Office said deputies arrested four suspects and seized a kilogram of fentanyl in a series of traffic stops.
According to a Facebook post , BCSO’s Gang Unit was executing “proactive patrols” when the fentanyl was seized.
The sheriff’s office said that, among the four suspects arrested, one is a confirmed gang member.
The following suspects face several narcotics-related charges, the post said:
Christopher Anthony Rivera, 32, arrested on a warrant for possession of a controlled substance PG 1/1-B <1g
Alan Segura, 20, was charged with possession of a controlled substance PG 2 > 1g-4g
Allyson Janelle Alvarez, 21, was charged with possession of a controlled substance PG 2 > 1g-4g
Erik Adrian Gonzalez, 34, was charged with possession of a controlled substance PG 1-B>400g and possession of a controlled substance PG 1 > 1g-4g
More crime coverage on KSAT
Copyright 2025 by KSAT - All rights reserved.
About the Authors Spencer Heath headshot
Spencer Heath is a Digital Journalist at KSAT. Spencer graduated from the University of Texas at Austin, where he studied Radio-Television-Film. He’s worked as a journalist in San Antonio since June of 2022.
Outside the newsroom, he enjoys watching movies and spending time with family.
Rocky Garza headshot
Rocky Garza Jr. is a Content Gatherer at KSAT-12 News.
Spurs respond after viral video at game sparks backlash ▶ 0:52
Spurs respond after viral video at game sparks backlash
Is the 'smokable' hemp market about to be set ablaze? ▶ 1:40
Is the 'smokable' hemp market about to be set ablaze?
Reuniting items found along the Guadalupe River after the deadly floods ▶ 1:59
Reuniting items found along the Guadalupe River after the deadly floods
Week one of Christopher Preciado trial wraps up ▶ 1:06
Week one of Christopher Preciado trial wraps up
SA airport reports short TSA wait ▶ 1:22
SA airport reports short TSA wait
Summer Savings Ideas in SA ▶ 1:45
Summer Savings Ideas in SA
Should the city rename César Chávez Blvd? ▶ 0:29
Should the city rename César Chávez Blvd?
Shuttle driver rescues toddler from a busy road ▶ 1:00
Shuttle driver rescues toddler from a busy road
Man dies by suicide in police custody ▶ 0:35
Man dies by suicide in police custody
Day 3: Erica Hernandez recaps evidence shown ▶ 1:05
Day 3: Erica Hernandez recaps evidence shown
San Antonio César Chávez march organizers, foundation disbands amid sexual abuse allegations ▶ 1:02
San Antonio César Chávez march organizers, foundation disbands amid sexual abuse allegations
SAPD says 12-year-old killed in a street racing crash ▶ 1:32
SAPD says 12-year-old killed in a street racing crash
2026 César E. Chávez March for Justice cancelled ▶ 2:10
2026 César E. Chávez March for Justice cancelled
Christopher Preciado Capital Murder Trial Day 2 ▶ 1:02
Christopher Preciado Capital Murder Trial Day 2
Possible relief for a northeast side dangerous intersection. ▶ 1:07
Possible relief for a northeast side dangerous intersection.
CORPUS CHRISTI TURNING TO SAN ANTONIO FOR ANSWERS TO ITS WATER CRISIS ▶ 0:48
CORPUS CHRISTI TURNING TO SAN ANTONIO FOR ANSWERS TO ITS WATER CRISIS
Blind man says security pushed him down stairs, beat him in parking lot of North Side bar ▶ 1:35
Blind man says security pushed him down stairs, beat him in parking lot of North Side bar
Desfile Flambeau Iluminara la noche durante Fiesta ▶ 2:32
Desfile Flambeau Iluminara la noche durante Fiesta
Adam Caskey has your cold Weather Authority update. ▶ 0:16
Adam Caskey has your cold Weather Authority update.
Checking your roof for wind damage.mp4 ▶ 0:55
Checking your roof for wind damage.mp4
Jury selection began on Monday in the case of Christopher Preciado ▶ 0:38
Jury selection began on Monday in the case of Christopher Preciado
DPS Mega Center closed due to plumbing issues ▶ 0:39
DPS Mega Center closed due to plumbing issues
Security camera footage captures sound of when gunfire begins ▶ 0:41
Security camera footage captures sound of when gunfire begins
Bullet holes in homes ▶ 2:17
Bullet holes in homes
Schertz searches for answers to frequent railroad crossing crashes ▶ 0:51
Schertz searches for answers to frequent railroad crossing crashes
Previous photo Next photo