Lillie Mae Christiansen, a 57-year-old Vallejo resident, was fatally shot on July 13, 2014, on a neighbor’s porch in the 900 block of Mare Island Way at about 10:20 p.m. Neighbors and family who knew her held a candlelight vigil and turned the porch into a memorial with candles and personal mementos.

Police identified a neighbor, 45-year-old Michael David Wilson, as the suspect and arrested him later that night at his home after finding a weapon consistent with the one used in the shooting. Wilson was charged with murder; police said the motive was not immediately clear. Investigators also noted a separate drive-by shooting in the area days earlier that wounded three men but said they did not believe the two incidents were related.

If anyone knew Lillie Mae Christiansen or has information about what happened that night, please share what you know.