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Ben becomes a fanatical monotheist and ostensibly goes with Graystone and Lacy to leave Caprica to live on Gemenon. As they board the Lev subway train to head for the space port to leave Caprica, Lacy backs out of the plan to run away and stays behind. Instead (and without Zoe's prior knowledge of his intent) he blows up their train and himself with a bomb (CAP: Caprica pilot).
During the a public ceremony held on Junius 7th denoting the one month marking of the tragedy in which the families of the victims spoke of their loss Natalie Stark, Ben's mother, gave Amanda Graystone various objects that belonged to her daughter Zoe that were found in Ben's room by his mother including a large foldable gold STO infinity symbol. Amanda Graystone was totally unaware that Zoe had a boyfriend or was a member of STO. In her grief and shock she took the podium and told the assembled victims' families as well as the rest of the world that her daughter was the bomber of Maglev 23, unfairly making her daughter, herself, and her husband pariahs in the eyes of the Worlds (Rebirth).
On Aprilus 9th, YR41 Stark was picked up for a post 10pm curfew violation by the GDD nearly a year prior to his bombing. He was found with what are now known to be bomb making materials, but explained away at the time by Stark to his interrogator, Agent Youngblood as model rocketry components. He was let go on a warning due to lack of probable cause and the plausibility of his explanation for the materials. His tape would go undiscovered for over a month after the bombing because Agent Youngblood spelled his surname "Starke" with an "e" and consequently misfiled. Youngblood herself totally forgot about Stark. Fearing departmental embarrassment and to protect his partner Agent Youngblood, this tape was destroyed by Agent Jordan Durham perhaps on GDD Director Gara Singh's broad hint (CAP: "The Reins of a Waterfall").