"I was at home asleep, and all of a sudden, I heard a couple shots, you know -- boom boom-- and then it woke me up," said neighbor Royce McElmore.
Shortly after midnight, 911 calls poured-in to report a boy had been shot multiple times.
"Deputies on-scene attempted CPR and first aid to the victim; however, a short-time later, medical personnel pronounced the subject deceased," said Marin Co. Sheriff's Office Lt. Jamie Scardina.
The victim's sister, April, tells ABC7 News her brother was a good kid who turned 17-years-old four days ago. He recently came to this public housing complex to live with his mom after moving from his father's home in the Northern California town of Weed. He didn't know anyone here and being new to the neighborhood could have made him a target.
April, "We're not from out here. When you're not from out here, and you walk around, it's not okay. It's not okay. Being a guy, you have it worse than the girls," said April.
Neighbors think the teen was at the wrong place at the wrong time. His family had been attacked before.
"I worked with his family last year -- people shot into their home and had terrified the family and I had worked with them to try to get them a transfer out of Marin City," said McElmore.
"I don't know who shot my brother. I wish I knew who shot my brother. I don't know who shot my brother," said April.
There is no one in custody and no description of the shooter. Anyone with information is encouraged to contact the Marin County Sheriff's Office. Bay Area Crime Stoppers is offering a reward and tips can be anonymous.