SAN FRANCISCO (KRON) — A $100,000 reward is being offered for information leading to an arrest and conviction in connection to a San Francisco cold case homicide, police announced Wednesday. The victim, 30-year-old Karl Holmberg, was fatally stabbed in the Hayes Valley neighborhood on Saturday, August 3, 1991.

Holmberg was at Hayes and Laguna streets around 9:40 p.m. when he was attacked by a group of young men, according to the San Francisco Police Department. As he was being assaulted, one of the men stabbed Holmberg.

After the attack, Holmberg walked to the area of Laguna and Fell streets where he collapsed from his injuries, SFPD said. He would later be pronounced deceased at San Francisco General Hospital.

Anyone with information is asked to contact SFPD Investigator Thomas Newland at 415-553-1145. Outside of business hours, people can call the Operations Center at 415-553-1071. Anonymous tips can be made at 415-575-4444 or text a tip to TIP411 and begin the message with SFPD.