Ms Kupfer, 24, was attacked and killed whereas working alone at Croft Home furnishings retailer within the suburb of Hancock Park final Thursday afternoon.
Police have mentioned the suspect is a homeless man.
In an announcement, the LAPD mentioned: “West Bureau Murder Detectives are asking the general public’s assist for info figuring out and finding the suspect in a lethal stabbing, which occurred on January 13, 2022 and can announce a $50,000 reward for info resulting in the arrest and conviction of the suspect.”
The LAPD are on account of maintain a press convention at 1pm PST (4pm EST) to formally announce the reward.
LAPD police chief Michael Moore, metropolis council member Paul Koretz and a member of the Kupfer household will attend.
Ms Kupfer’s killing has prompted an outpouring of grief and anger amid hovering violent crime charges in Los Angeles.
Her father Todd Kupfer has blamed political inaction within the metropolis for the surging crime ranges in Los Angeles.