A traffic stop in the early hours of Thursday led to the arrest of a man on federal probation who was found in possession of drugs and an unregistered firearm, according to the South Pasadena Police Department.
Officer Conducts Stop After Suspicious Behavior
At approximately 2:25 a.m., a South Pasadena Patrol Officer observed a vehicle exhibiting suspicious behavior near the 400 block of South Arroyo Parkway in Pasadena. The officer conducted a traffic stop after making additional observations that provided probable cause.
Search Reveals Drugs and Firearm
During the stop, the officer developed probable cause to search the vehicle. Inside, authorities discovered a loaded, unregistered firearm, multiple baggies of cocaine, fentanyl, and methamphetamine, as well as a scale. The driver, identified as 54-year-old Alfonso Cue Castro of Alhambra, is currently on federal probation.
Suspect Booked at Pasadena City Jail
Castro was arrested and booked at the Pasadena City Jail. Charges include possession of a controlled substance for sale with an unregistered firearm and being a prohibited person in possession of a firearm.
Public Safety Remains a Priority
The South Pasadena Police Department emphasized its continued commitment to public safety and accountability. Authorities are asking anyone with additional information about this incident to contact the department at (626) 403-7270. Anonymous tips can be submitted to Crime Stoppers at (800) 222-TIPS (8477).
About the City of South Pasadena:
Located just six miles from downtown Los Angeles, South Pasadena is known for its tree-lined streets, historic homes, local businesses, and strong sense of community. With a population of approximately 25,000, the city prides itself on its small-town charm and commitment to quality of life.
For more information, visit www.southpasadenaca.gov and follow South Pasadena on social media to keep up with the latest news: Facebook, X, Instagram, and YouTube.




















