CAMPBELL — Police are hoping that the release of a suspect sketch and surveillance image Thursday will help them find a man who robbed an auto dealership at gunpoint earlier this month.

The robbery was reported at around 6:50 p.m. April 5, not long after a man calling himself “Robbie” walked into Keiser Motors on Dell Avenue and asked to test drive a pickup truck there.

After the test drive, police say the man walked out to his own truck to purportedly retrieve paperwork, but instead returned to the dealership wearing different clothes and carrying a semi-automatic pistol.

The man threatened and demanded money from the same employee who had just helped him with the test drive, and then drove away in a tan or champagne pickup — not the test-driven truck — last seen southbound on Dell Avenue.

Police say that based on the victim’s reported conversation with the gunman, the suspect may have a mental disability, and made mention of being affiliated with a local carpenter’s union.

The suspect was described as a white man in his 30s, 5 feet 10 inches tall, 150 pounds, with brown hair, and last seen wearing a blue zip-up jacket with a blue checkered flannel liner, dark pants and a dark-colored beanie cap.

Anyone who recognizes the suspect or has information about the case can contact Campbell detectives at 408-871-5190 or the 24-hour dispatch at 408-866-2101. Tips can also be submitted through the Campbell police mobile app available on the Apple App Store or Google Play.