The California Shooter: What we know now.
b"Investigators in Northern California are piecing together the alleged shooter\\u2019s movements before he carried out his attack. They now believe he went shopping beforehand. The fact that he was alone while shopping leads them to believe he acted alone and did not have an accomplice when he opened fire. Also details about a second gun found along with a backpack with ammunition inside. ABC's Alex Stone joins Tony from California with the latest."