The family of 21-year-old Jonathan Hernández Rodríguez is searching for answers after learning his death is being connected to serial killings in Stockton. Leer en españolSeven known shootings from April 2021 to late September 2022 were linked through ballistics tests, Stockton police said. Of those shootings, Hernández was one of the six victims killed.Hernández, who was born and raised in Stockton, was known by his friends and loved ones as Johnny.He's the youngest victim, and his body was found inside his car by residents at the apartment complex where he lived on East Hammer Lane and Tam O Shanter Drive in Stockton on the morning of Aug. 30.| Video Below | Stockton serial killings: Video of person of interest released, ballistics connect shootingsHis mother, Viridiana Rodríguez, spoke with KCRA 3 about how difficult the past month has been as everything reminds her of him. She said her husband called her while she was working to notify her about her son's shooting and she immediately left work. Since then, she's been dealing with grief, shock, and a silent home that now lacks the sound of Johnny's presence.Viridiana set up a memorial near that parking spot with a message that reads in part, "I will always love you and remember you with the love that you always had for us, your parents. You didn't deserve your life to be taken this way. You were always a good and kind child to everyone around you and they all loved you. I, your mother, am mostly heartbroken and will always miss you with my heart and soul. - Your 'Mami,' as you always called me."His ashes lay inside an urn in his parent's living room along with some photos she'd like to hang on the wall, but also considering whether moving out of Stockton is the best decision for her family given that she still has a daughter and is afraid for her safety.She also said that although sometimes people choose not to come forward when witnessing a crime to avoid any issues, she's asking anyone who may know anything about her son's murder, to come forward and bring families like hers some justice.These are the six cases believed to be linked:April 10, 2021 - Juan Miguel Vásquez Serrano at 5800 Harmon Avenue in Oakland just after 4:00 AM.July 8, 2022 - 35-year-old Paul Alexander Yaw was killed at the 5600 block of Kermit Lane in Stockton at 12:31 a.m.Aug. 11, 2022 - 43-year-old Salvador William Debudey, Jr. was killed at the 4900 block of West Lane in Stockton at 9:49 p.m.Aug. 30, 2022 - 21-year-old Jonathan Hernández Rodríguez at the 800 block of East Hammer Lane in Stockton at 6:41 a.m.Sept. 21, 2022 - 52-year-old Juan Cruz was killed at the 4400 block of Manchester Avenue in Stockton at 4:27 a.m.Sept. 27, 2022 - 54-year-old Lorenzo Lopez was killed at the 900 block of Porter Avenue in Stockton at 1:51 a.m.Woman is only known survivor of connected attacksA 46-year-old Black woman is the only known survivor of the shootings. Stockton Police Chief Stanley McFadden said the woman biked to an encampment at Park and Union streets in Stockton where she was shot on April 16, 2021, at around 3:30 a.m.The woman was by a tent when she saw a man, dressed in all dark clothing, wearing a dark face mask and a dark jacket. She said the man was anywhere between 5 foot 10 inches to 6 foot 2 inches.Related CoverageWhat we're learning about victims of the Stockton serial killings Stockton serial killings: Everything we know and don't know so farSerial killers are 'very complicated psychologically, to investigate,' experts sayVideo of person of interest released, ballistics connect shootingsHow the Stockton community is coming together amid serial killing fears