Sonia Beverly Cassia was 48 when she was last seen in San Francisco on March 1, 2016, one day before what would have been her 49th birthday. She’s described as an Asian female with black hair, brown eyes, pierced ears, standing about 5 feet 2 inches and weighing around 110 pounds. She may have used the last name Johnson.

Few details about the circumstances of her disappearance have been made public. Her case is listed on NamUs and the California Attorney General’s database, and the San Francisco Police Department continues to seek leads, though little information is available to explain what happened.

If anyone knew Sonia, knew her as Johnson, or has information about her whereabouts in early March 2016, please share what you know with investigators.