San Francisco, CA – Today, San Francisco District Attorney Brooke Jenkins announced that her office secured the conviction of Mark Johnson (59) after a trial by jury for possession of any device, contrivance, instrument, or paraphernalia used for unlawfully injecting or smoking a controlled substance that is a narcotic drug (HS 11364(a)) and driving, moving, or leaving an unregistered and/or unauthorized vehicle standing upon a highway, or in an off-street public parking facility (PC 4000(a)(1)).

“I would like to thank the jury for their service in this trial,” said District Attorney Brooke Jenkins. “My office takes road safety seriously, and this verdict shows that San Francisco won’t tolerate behavior that could put others on the road in harm’s way. This situation could have ended very differently had police officers not investigated.”

According to testimony and evidence presented at trial, on February 5, 2026, at approximately 6:03 PM, a San Francisco Police Department (SFPD) officer near Jones Street saw Mr. Johnson asleep in the driver’s seat of his vehicle while the vehicle was still running with its blinker on. As the officer approached the vehicle, Mr. Johnson tried to pull into the traffic lane, and officers noticed a glass pipe, commonly used for the ingestion of controlled substances, in his lap.

The case against Mark Johnson was successfully prosecuted by Assistant District Attorney Troy Heisman with assistance from paralegals Nohemi Torres and Audrey Yu, and IT assistance from Noaeh Pinaire. Prosecutors were able to develop a strong case against Mr. Johnson based on the San Francisco Police Department’s thorough investigation and assistance.

“Thank you to the entire Misdemeanor team for helping secure the guilty verdicts.” said Assistant District Attorney Troy Heisman. “The DA’s office takes possession of paraphernalia for ingesting narcotics very seriously and we are glad this situation did not become more dangerous.”

Court Number: 26403079

###