OAKLAND (KRON) — Oakland Police Homicide investigators released the attached video surveillance photo of a person of interest in connection with the homicide of muralist Antonio Ramos.

Ramos was shot and killed at about at about 10:28 last Tuesday while working on a community art project in West Oakland. He was one of several artists working on a mural under the Interstate Highway 580 overpass between 35th and 36th streets.

A single male suspect walked up to the area where the artists were working, shot the victim and walked away, police spokeswoman Officer Johnna Watson said. Investigators are looking at what lead up to the shooting, such as whether there was an argument.

Oakland Police Chief Sean Whent called the shooting “really tragic” and “totally unacceptable.” Whent said the artist was “someone who was trying to make a positive difference in this city and lost his life.”

The mural was the third of six planned murals in the Oakland Super Heroes Mural Project organized by ArtEsteem, the art and literacy arm of Attitudinal Healing Connection, a West Oakland Group that seeks to stop violence by inspiring people with art and education.

Investigators are requesting help from anyone who may be able to identify the man in this photo and/or his whereabouts.

The person of interest is described as an African-American male in his twenties, approximately 6 feet tall, with a thin build and dark complexion.

Anyone with information about the person in the photo is asked to contact the Oakland Police Department Homicide Section at (510) 238-3821 or call Crime Stoppers of Oakland at 510-777-8572.

Crime Stoppers of Oakland has offered a reward of up to $10,000 for information leading to an arrest in this case.